[JFFS2] semaphore->mutex conversion
authorDavid Woodhouse <dwmw2@infradead.org>
Tue, 22 Apr 2008 14:13:40 +0000 (15:13 +0100)
committerDavid Woodhouse <dwmw2@infradead.org>
Tue, 22 Apr 2008 14:13:40 +0000 (15:13 +0100)
Signed-off-by: David Woodhouse <dwmw2@infradead.org>
14 files changed:
fs/jffs2/README.Locking
fs/jffs2/debug.c
fs/jffs2/dir.c
fs/jffs2/erase.c
fs/jffs2/file.c
fs/jffs2/fs.c
fs/jffs2/gc.c
fs/jffs2/jffs2_fs_i.h
fs/jffs2/jffs2_fs_sb.h
fs/jffs2/nodemgmt.c
fs/jffs2/readinode.c
fs/jffs2/super.c
fs/jffs2/wbuf.c
fs/jffs2/write.c

index d14d5a4dc5ac6f9a956fc1653e04de94079470e7..3ea36554107fc7740558ac81daa0328c308b2903 100644 (file)
@@ -14,7 +14,7 @@ be fairly close.
        alloc_sem
        ---------
 
-The alloc_sem is a per-filesystem semaphore, used primarily to ensure
+The alloc_sem is a per-filesystem mutex, used primarily to ensure
 contiguous allocation of space on the medium. It is automatically
 obtained during space allocations (jffs2_reserve_space()) and freed
 upon write completion (jffs2_complete_reservation()). Note that
@@ -41,10 +41,10 @@ if the wbuf is currently holding any data is permitted, though.
 Ordering constraints: See f->sem.
 
 
-       File Semaphore f->sem
+       File Mutex f->sem
        ---------------------
 
-This is the JFFS2-internal equivalent of the inode semaphore i->i_sem.
+This is the JFFS2-internal equivalent of the inode mutex i->i_sem.
 It protects the contents of the jffs2_inode_info private inode data,
 including the linked list of node fragments (but see the notes below on
 erase_completion_lock), etc.
@@ -60,14 +60,14 @@ lead to deadlock, unless we played games with unlocking the i_sem
 before calling the space allocation functions.
 
 Instead of playing such games, we just have an extra internal
-semaphore, which is obtained by the garbage collection code and also
+mutex, which is obtained by the garbage collection code and also
 by the normal file system code _after_ allocation of space.
 
 Ordering constraints: 
 
        1. Never attempt to allocate space or lock alloc_sem with 
           any f->sem held.
-       2. Never attempt to lock two file semaphores in one thread.
+       2. Never attempt to lock two file mutexes in one thread.
           No ordering rules have been made for doing so.
 
 
@@ -86,8 +86,8 @@ a simple spin_lock() rather than spin_lock_bh().
 
 Note that the per-inode list of physical nodes (f->nodes) is a special
 case. Any changes to _valid_ nodes (i.e. ->flash_offset & 1 == 0) in
-the list are protected by the file semaphore f->sem. But the erase
-code may remove _obsolete_ nodes from the list while holding only the
+the list are protected by the file mutex f->sem. But the erase code
+may remove _obsolete_ nodes from the list while holding only the
 erase_completion_lock. So you can walk the list only while holding the
 erase_completion_lock, and can drop the lock temporarily mid-walk as
 long as the pointer you're holding is to a _valid_ node, not an
@@ -124,10 +124,10 @@ Ordering constraints:
        erase_free_sem
        --------------
 
-This semaphore is only used by the erase code which frees obsolete
-node references and the jffs2_garbage_collect_deletion_dirent()
-function. The latter function on NAND flash must read _obsolete_ nodes
-to determine whether the 'deletion dirent' under consideration can be
+This mutex is only used by the erase code which frees obsolete node
+references and the jffs2_garbage_collect_deletion_dirent() function.
+The latter function on NAND flash must read _obsolete_ nodes to
+determine whether the 'deletion dirent' under consideration can be
 discarded or whether it is still required to show that an inode has
 been unlinked. Because reading from the flash may sleep, the
 erase_completion_lock cannot be held, so an alternative, more
index 3a32c64ed4975260079e7b9f3c435eecef18b534..660793107e9278a6006034a2a3a07adce3a033e8 100644 (file)
@@ -62,9 +62,9 @@ __jffs2_dbg_acct_sanity_check(struct jffs2_sb_info *c,
 void
 __jffs2_dbg_fragtree_paranoia_check(struct jffs2_inode_info *f)
 {
-       down(&f->sem);
+       mutex_lock(&f->sem);
        __jffs2_dbg_fragtree_paranoia_check_nolock(f);
-       up(&f->sem);
+       mutex_unlock(&f->sem);
 }
 
 void
@@ -532,9 +532,9 @@ __jffs2_dbg_dump_block_lists_nolock(struct jffs2_sb_info *c)
 void
 __jffs2_dbg_dump_fragtree(struct jffs2_inode_info *f)
 {
-       down(&f->sem);
+       mutex_lock(&f->sem);
        jffs2_dbg_dump_fragtree_nolock(f);
-       up(&f->sem);
+       mutex_unlock(&f->sem);
 }
 
 void
index f948f7e6ec8202ab901d83b7fd5c62fd6ec41b27..c63e7a96af0dd025996c80b707b710213d7bdb1d 100644 (file)
@@ -86,7 +86,7 @@ static struct dentry *jffs2_lookup(struct inode *dir_i, struct dentry *target,
        dir_f = JFFS2_INODE_INFO(dir_i);
        c = JFFS2_SB_INFO(dir_i->i_sb);
 
-       down(&dir_f->sem);
+       mutex_lock(&dir_f->sem);
 
        /* NB: The 2.2 backport will need to explicitly check for '.' and '..' here */
        for (fd_list = dir_f->dents; fd_list && fd_list->nhash <= target->d_name.hash; fd_list = fd_list->next) {
@@ -99,7 +99,7 @@ static struct dentry *jffs2_lookup(struct inode *dir_i, struct dentry *target,
        }
        if (fd)
                ino = fd->ino;
-       up(&dir_f->sem);
+       mutex_unlock(&dir_f->sem);
        if (ino) {
                inode = jffs2_iget(dir_i->i_sb, ino);
                if (IS_ERR(inode)) {
@@ -146,7 +146,7 @@ static int jffs2_readdir(struct file *filp, void *dirent, filldir_t filldir)
        }
 
        curofs=1;
-       down(&f->sem);
+       mutex_lock(&f->sem);
        for (fd = f->dents; fd; fd = fd->next) {
 
                curofs++;
@@ -166,7 +166,7 @@ static int jffs2_readdir(struct file *filp, void *dirent, filldir_t filldir)
                        break;
                offset++;
        }
-       up(&f->sem);
+       mutex_unlock(&f->sem);
  out:
        filp->f_pos = offset;
        return 0;
@@ -275,9 +275,9 @@ static int jffs2_link (struct dentry *old_dentry, struct inode *dir_i, struct de
        ret = jffs2_do_link(c, dir_f, f->inocache->ino, type, dentry->d_name.name, dentry->d_name.len, now);
 
        if (!ret) {
-               down(&f->sem);
+               mutex_lock(&f->sem);
                old_dentry->d_inode->i_nlink = ++f->inocache->nlink;
-               up(&f->sem);
+               mutex_unlock(&f->sem);
                d_instantiate(dentry, old_dentry->d_inode);
                dir_i->i_mtime = dir_i->i_ctime = ITIME(now);
                atomic_inc(&old_dentry->d_inode->i_count);
@@ -351,7 +351,7 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char
 
        if (IS_ERR(fn)) {
                /* Eeek. Wave bye bye */
-               up(&f->sem);
+               mutex_unlock(&f->sem);
                jffs2_complete_reservation(c);
                jffs2_clear_inode(inode);
                return PTR_ERR(fn);
@@ -361,7 +361,7 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char
        f->target = kmalloc(targetlen + 1, GFP_KERNEL);
        if (!f->target) {
                printk(KERN_WARNING "Can't allocate %d bytes of memory\n", targetlen + 1);
-               up(&f->sem);
+               mutex_unlock(&f->sem);
                jffs2_complete_reservation(c);
                jffs2_clear_inode(inode);
                return -ENOMEM;
@@ -374,7 +374,7 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char
           obsoleted by the first data write
        */
        f->metadata = fn;
-       up(&f->sem);
+       mutex_unlock(&f->sem);
 
        jffs2_complete_reservation(c);
 
@@ -406,7 +406,7 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char
        }
 
        dir_f = JFFS2_INODE_INFO(dir_i);
-       down(&dir_f->sem);
+       mutex_lock(&dir_f->sem);
 
        rd->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
        rd->nodetype = cpu_to_je16(JFFS2_NODETYPE_DIRENT);
@@ -429,7 +429,7 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char
                   as if it were the final unlink() */
                jffs2_complete_reservation(c);
                jffs2_free_raw_dirent(rd);
-               up(&dir_f->sem);
+               mutex_unlock(&dir_f->sem);
                jffs2_clear_inode(inode);
                return PTR_ERR(fd);
        }
@@ -442,7 +442,7 @@ static int jffs2_symlink (struct inode *dir_i, struct dentry *dentry, const char
           one if necessary. */
        jffs2_add_fd_to_list(c, fd, &dir_f->dents);
 
-       up(&dir_f->sem);
+       mutex_unlock(&dir_f->sem);
        jffs2_complete_reservation(c);
 
        d_instantiate(dentry, inode);
@@ -507,7 +507,7 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode)
 
        if (IS_ERR(fn)) {
                /* Eeek. Wave bye bye */
-               up(&f->sem);
+               mutex_unlock(&f->sem);
                jffs2_complete_reservation(c);
                jffs2_clear_inode(inode);
                return PTR_ERR(fn);
@@ -516,7 +516,7 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode)
           obsoleted by the first data write
        */
        f->metadata = fn;
-       up(&f->sem);
+       mutex_unlock(&f->sem);
 
        jffs2_complete_reservation(c);
 
@@ -548,7 +548,7 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode)
        }
 
        dir_f = JFFS2_INODE_INFO(dir_i);
-       down(&dir_f->sem);
+       mutex_lock(&dir_f->sem);
 
        rd->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
        rd->nodetype = cpu_to_je16(JFFS2_NODETYPE_DIRENT);
@@ -571,7 +571,7 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode)
                   as if it were the final unlink() */
                jffs2_complete_reservation(c);
                jffs2_free_raw_dirent(rd);
-               up(&dir_f->sem);
+               mutex_unlock(&dir_f->sem);
                jffs2_clear_inode(inode);
                return PTR_ERR(fd);
        }
@@ -585,7 +585,7 @@ static int jffs2_mkdir (struct inode *dir_i, struct dentry *dentry, int mode)
           one if necessary. */
        jffs2_add_fd_to_list(c, fd, &dir_f->dents);
 
-       up(&dir_f->sem);
+       mutex_unlock(&dir_f->sem);
        jffs2_complete_reservation(c);
 
        d_instantiate(dentry, inode);
@@ -673,7 +673,7 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, de
 
        if (IS_ERR(fn)) {
                /* Eeek. Wave bye bye */
-               up(&f->sem);
+               mutex_unlock(&f->sem);
                jffs2_complete_reservation(c);
                jffs2_clear_inode(inode);
                return PTR_ERR(fn);
@@ -682,7 +682,7 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, de
           obsoleted by the first data write
        */
        f->metadata = fn;
-       up(&f->sem);
+       mutex_unlock(&f->sem);
 
        jffs2_complete_reservation(c);
 
@@ -714,7 +714,7 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, de
        }
 
        dir_f = JFFS2_INODE_INFO(dir_i);
-       down(&dir_f->sem);
+       mutex_lock(&dir_f->sem);
 
        rd->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
        rd->nodetype = cpu_to_je16(JFFS2_NODETYPE_DIRENT);
@@ -740,7 +740,7 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, de
                   as if it were the final unlink() */
                jffs2_complete_reservation(c);
                jffs2_free_raw_dirent(rd);
-               up(&dir_f->sem);
+               mutex_unlock(&dir_f->sem);
                jffs2_clear_inode(inode);
                return PTR_ERR(fd);
        }
@@ -753,7 +753,7 @@ static int jffs2_mknod (struct inode *dir_i, struct dentry *dentry, int mode, de
           one if necessary. */
        jffs2_add_fd_to_list(c, fd, &dir_f->dents);
 
-       up(&dir_f->sem);
+       mutex_unlock(&dir_f->sem);
        jffs2_complete_reservation(c);
 
        d_instantiate(dentry, inode);
@@ -780,14 +780,14 @@ static int jffs2_rename (struct inode *old_dir_i, struct dentry *old_dentry,
                if (S_ISDIR(new_dentry->d_inode->i_mode)) {
                        struct jffs2_full_dirent *fd;
 
-                       down(&victim_f->sem);
+                       mutex_lock(&victim_f->sem);
                        for (fd = victim_f->dents; fd; fd = fd->next) {
                                if (fd->ino) {
-                                       up(&victim_f->sem);
+                                       mutex_unlock(&victim_f->sem);
                                        return -ENOTEMPTY;
                                }
                        }
-                       up(&victim_f->sem);
+                       mutex_unlock(&victim_f->sem);
                }
        }
 
@@ -816,9 +816,9 @@ static int jffs2_rename (struct inode *old_dir_i, struct dentry *old_dentry,
                /* Don't oops if the victim was a dirent pointing to an
                   inode which didn't exist. */
                if (victim_f->inocache) {
-                       down(&victim_f->sem);
+                       mutex_lock(&victim_f->sem);
                        victim_f->inocache->nlink--;
-                       up(&victim_f->sem);
+                       mutex_unlock(&victim_f->sem);
                }
        }
 
@@ -836,11 +836,11 @@ static int jffs2_rename (struct inode *old_dir_i, struct dentry *old_dentry,
        if (ret) {
                /* Oh shit. We really ought to make a single node which can do both atomically */
                struct jffs2_inode_info *f = JFFS2_INODE_INFO(old_dentry->d_inode);
-               down(&f->sem);
+               mutex_lock(&f->sem);
                inc_nlink(old_dentry->d_inode);
                if (f->inocache)
                        f->inocache->nlink++;
-               up(&f->sem);
+               mutex_unlock(&f->sem);
 
                printk(KERN_NOTICE "jffs2_rename(): Link succeeded, unlink failed (err %d). You now have a hard link\n", ret);
                /* Might as well let the VFS know */
index a1db9180633fcb3476757af80f22b3e6621f06d2..96d9ad56e57303662f5165f02d97b00b9d7c8960 100644 (file)
@@ -50,14 +50,14 @@ static void jffs2_erase_block(struct jffs2_sb_info *c,
        instr = kmalloc(sizeof(struct erase_info) + sizeof(struct erase_priv_struct), GFP_KERNEL);
        if (!instr) {
                printk(KERN_WARNING "kmalloc for struct erase_info in jffs2_erase_block failed. Refiling block for later\n");
-               down(&c->erase_free_sem);
+               mutex_lock(&c->erase_free_sem);
                spin_lock(&c->erase_completion_lock);
                list_move(&jeb->list, &c->erase_pending_list);
                c->erasing_size -= c->sector_size;
                c->dirty_size += c->sector_size;
                jeb->dirty_size = c->sector_size;
                spin_unlock(&c->erase_completion_lock);
-               up(&c->erase_free_sem);
+               mutex_unlock(&c->erase_free_sem);
                return;
        }
 
@@ -84,14 +84,14 @@ static void jffs2_erase_block(struct jffs2_sb_info *c,
        if (ret == -ENOMEM || ret == -EAGAIN) {
                /* Erase failed immediately. Refile it on the list */
                D1(printk(KERN_DEBUG "Erase at 0x%08x failed: %d. Refiling on erase_pending_list\n", jeb->offset, ret));
-               down(&c->erase_free_sem);
+               mutex_lock(&c->erase_free_sem);
                spin_lock(&c->erase_completion_lock);
                list_move(&jeb->list, &c->erase_pending_list);
                c->erasing_size -= c->sector_size;
                c->dirty_size += c->sector_size;
                jeb->dirty_size = c->sector_size;
                spin_unlock(&c->erase_completion_lock);
-               up(&c->erase_free_sem);
+               mutex_unlock(&c->erase_free_sem);
                return;
        }
 
@@ -107,7 +107,7 @@ void jffs2_erase_pending_blocks(struct jffs2_sb_info *c, int count)
 {
        struct jffs2_eraseblock *jeb;
 
-       down(&c->erase_free_sem);
+       mutex_lock(&c->erase_free_sem);
 
        spin_lock(&c->erase_completion_lock);
 
@@ -118,7 +118,7 @@ void jffs2_erase_pending_blocks(struct jffs2_sb_info *c, int count)
                        jeb = list_entry(c->erase_complete_list.next, struct jffs2_eraseblock, list);
                        list_del(&jeb->list);
                        spin_unlock(&c->erase_completion_lock);
-                       up(&c->erase_free_sem);
+                       mutex_unlock(&c->erase_free_sem);
                        jffs2_mark_erased_block(c, jeb);
 
                        if (!--count) {
@@ -139,7 +139,7 @@ void jffs2_erase_pending_blocks(struct jffs2_sb_info *c, int count)
                        jffs2_free_jeb_node_refs(c, jeb);
                        list_add(&jeb->list, &c->erasing_list);
                        spin_unlock(&c->erase_completion_lock);
-                       up(&c->erase_free_sem);
+                       mutex_unlock(&c->erase_free_sem);
 
                        jffs2_erase_block(c, jeb);
 
@@ -149,12 +149,12 @@ void jffs2_erase_pending_blocks(struct jffs2_sb_info *c, int count)
 
                /* Be nice */
                yield();
-               down(&c->erase_free_sem);
+               mutex_lock(&c->erase_free_sem);
                spin_lock(&c->erase_completion_lock);
        }
 
        spin_unlock(&c->erase_completion_lock);
-       up(&c->erase_free_sem);
+       mutex_unlock(&c->erase_free_sem);
  done:
        D1(printk(KERN_DEBUG "jffs2_erase_pending_blocks completed\n"));
 }
@@ -162,11 +162,11 @@ void jffs2_erase_pending_blocks(struct jffs2_sb_info *c, int count)
 static void jffs2_erase_succeeded(struct jffs2_sb_info *c, struct jffs2_eraseblock *jeb)
 {
        D1(printk(KERN_DEBUG "Erase completed successfully at 0x%08x\n", jeb->offset));
-       down(&c->erase_free_sem);
+       mutex_lock(&c->erase_free_sem);
        spin_lock(&c->erase_completion_lock);
        list_move_tail(&jeb->list, &c->erase_complete_list);
        spin_unlock(&c->erase_completion_lock);
-       up(&c->erase_free_sem);
+       mutex_unlock(&c->erase_free_sem);
        /* Ensure that kupdated calls us again to mark them clean */
        jffs2_erase_pending_trigger(c);
 }
@@ -180,26 +180,26 @@ static void jffs2_erase_failed(struct jffs2_sb_info *c, struct jffs2_eraseblock
                   failed too many times. */
                if (!jffs2_write_nand_badblock(c, jeb, bad_offset)) {
                        /* We'd like to give this block another try. */
-                       down(&c->erase_free_sem);
+                       mutex_lock(&c->erase_free_sem);
                        spin_lock(&c->erase_completion_lock);
                        list_move(&jeb->list, &c->erase_pending_list);
                        c->erasing_size -= c->sector_size;
                        c->dirty_size += c->sector_size;
                        jeb->dirty_size = c->sector_size;
                        spin_unlock(&c->erase_completion_lock);
-                       up(&c->erase_free_sem);
+                       mutex_unlock(&c->erase_free_sem);
                        return;
                }
        }
 
-       down(&c->erase_free_sem);
+       mutex_lock(&c->erase_free_sem);
        spin_lock(&c->erase_completion_lock);
        c->erasing_size -= c->sector_size;
        c->bad_size += c->sector_size;
        list_move(&jeb->list, &c->bad_list);
        c->nr_erasing_blocks--;
        spin_unlock(&c->erase_completion_lock);
-       up(&c->erase_free_sem);
+       mutex_unlock(&c->erase_free_sem);
        wake_up(&c->erase_wait);
 }
 
@@ -456,7 +456,7 @@ static void jffs2_mark_erased_block(struct jffs2_sb_info *c, struct jffs2_eraseb
                jffs2_link_node_ref(c, jeb, jeb->offset | REF_NORMAL, c->cleanmarker_size, NULL);
        }
 
-       down(&c->erase_free_sem);
+       mutex_lock(&c->erase_free_sem);
        spin_lock(&c->erase_completion_lock);
        c->erasing_size -= c->sector_size;
        c->free_size += jeb->free_size;
@@ -469,28 +469,28 @@ static void jffs2_mark_erased_block(struct jffs2_sb_info *c, struct jffs2_eraseb
        c->nr_erasing_blocks--;
        c->nr_free_blocks++;
        spin_unlock(&c->erase_completion_lock);
-       up(&c->erase_free_sem);
+       mutex_unlock(&c->erase_free_sem);
        wake_up(&c->erase_wait);
        return;
 
 filebad:
-       down(&c->erase_free_sem);
+       mutex_lock(&c->erase_free_sem);
        spin_lock(&c->erase_completion_lock);
        /* Stick it on a list (any list) so erase_failed can take it
           right off again.  Silly, but shouldn't happen often. */
        list_add(&jeb->list, &c->erasing_list);
        spin_unlock(&c->erase_completion_lock);
-       up(&c->erase_free_sem);
+       mutex_unlock(&c->erase_free_sem);
        jffs2_erase_failed(c, jeb, bad_offset);
        return;
 
 refile:
        /* Stick it back on the list from whence it came and come back later */
        jffs2_erase_pending_trigger(c);
-       down(&c->erase_free_sem);
+       mutex_lock(&c->erase_free_sem);
        spin_lock(&c->erase_completion_lock);
        list_add(&jeb->list, &c->erase_complete_list);
        spin_unlock(&c->erase_completion_lock);
-       up(&c->erase_free_sem);
+       mutex_unlock(&c->erase_free_sem);
        return;
 }
index dcc2734e0b5d65479a34ba53a9bf7ea2f08ecbbf..5e920343b2c598595f2c068455e17d7d360c5a4f 100644 (file)
@@ -115,9 +115,9 @@ static int jffs2_readpage (struct file *filp, struct page *pg)
        struct jffs2_inode_info *f = JFFS2_INODE_INFO(pg->mapping->host);
        int ret;
 
-       down(&f->sem);
+       mutex_lock(&f->sem);
        ret = jffs2_do_readpage_unlock(pg->mapping->host, pg);
-       up(&f->sem);
+       mutex_unlock(&f->sem);
        return ret;
 }
 
@@ -154,7 +154,7 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
                if (ret)
                        goto out_page;
 
-               down(&f->sem);
+               mutex_lock(&f->sem);
                memset(&ri, 0, sizeof(ri));
 
                ri.magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
@@ -181,7 +181,7 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
                if (IS_ERR(fn)) {
                        ret = PTR_ERR(fn);
                        jffs2_complete_reservation(c);
-                       up(&f->sem);
+                       mutex_unlock(&f->sem);
                        goto out_page;
                }
                ret = jffs2_add_full_dnode_to_inode(c, f, fn);
@@ -195,12 +195,12 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
                        jffs2_mark_node_obsolete(c, fn->raw);
                        jffs2_free_full_dnode(fn);
                        jffs2_complete_reservation(c);
-                       up(&f->sem);
+                       mutex_unlock(&f->sem);
                        goto out_page;
                }
                jffs2_complete_reservation(c);
                inode->i_size = pageofs;
-               up(&f->sem);
+               mutex_unlock(&f->sem);
        }
 
        /*
@@ -209,9 +209,9 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping,
         * case of a short-copy.
         */
        if (!PageUptodate(pg)) {
-               down(&f->sem);
+               mutex_lock(&f->sem);
                ret = jffs2_do_readpage_nolock(inode, pg);
-               up(&f->sem);
+               mutex_unlock(&f->sem);
                if (ret)
                        goto out_page;
        }
index 9dafb53fb1d11a973e0ce33f16427cbe12202655..3eb1c84b0a33289b62dfef1dd21d774647302d64 100644 (file)
@@ -51,20 +51,20 @@ int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
                mdata = (char *)&dev;
                D1(printk(KERN_DEBUG "jffs2_setattr(): Writing %d bytes of kdev_t\n", mdatalen));
        } else if (S_ISLNK(inode->i_mode)) {
-               down(&f->sem);
+               mutex_lock(&f->sem);
                mdatalen = f->metadata->size;
                mdata = kmalloc(f->metadata->size, GFP_USER);
                if (!mdata) {
-                       up(&f->sem);
+                       mutex_unlock(&f->sem);
                        return -ENOMEM;
                }
                ret = jffs2_read_dnode(c, f, f->metadata, mdata, 0, mdatalen);
                if (ret) {
-                       up(&f->sem);
+                       mutex_unlock(&f->sem);
                        kfree(mdata);
                        return ret;
                }
-               up(&f->sem);
+               mutex_unlock(&f->sem);
                D1(printk(KERN_DEBUG "jffs2_setattr(): Writing %d bytes of symlink target\n", mdatalen));
        }
 
@@ -83,7 +83,7 @@ int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
                         kfree(mdata);
                return ret;
        }
-       down(&f->sem);
+       mutex_lock(&f->sem);
        ivalid = iattr->ia_valid;
 
        ri->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
@@ -134,7 +134,7 @@ int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
        if (IS_ERR(new_metadata)) {
                jffs2_complete_reservation(c);
                jffs2_free_raw_inode(ri);
-               up(&f->sem);
+               mutex_unlock(&f->sem);
                return PTR_ERR(new_metadata);
        }
        /* It worked. Update the inode */
@@ -165,7 +165,7 @@ int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
        }
        jffs2_free_raw_inode(ri);
 
-       up(&f->sem);
+       mutex_unlock(&f->sem);
        jffs2_complete_reservation(c);
 
        /* We have to do the vmtruncate() without f->sem held, since
@@ -256,12 +256,12 @@ struct inode *jffs2_iget(struct super_block *sb, unsigned long ino)
        c = JFFS2_SB_INFO(inode->i_sb);
 
        jffs2_init_inode_info(f);
-       down(&f->sem);
+       mutex_lock(&f->sem);
 
        ret = jffs2_do_read_inode(c, f, inode->i_ino, &latest_node);
 
        if (ret) {
-               up(&f->sem);
+               mutex_unlock(&f->sem);
                iget_failed(inode);
                return ERR_PTR(ret);
        }
@@ -338,7 +338,7 @@ struct inode *jffs2_iget(struct super_block *sb, unsigned long ino)
                printk(KERN_WARNING "jffs2_read_inode(): Bogus imode %o for ino %lu\n", inode->i_mode, (unsigned long)inode->i_ino);
        }
 
-       up(&f->sem);
+       mutex_unlock(&f->sem);
 
        D1(printk(KERN_DEBUG "jffs2_read_inode() returning\n"));
        unlock_new_inode(inode);
@@ -347,7 +347,7 @@ struct inode *jffs2_iget(struct super_block *sb, unsigned long ino)
 error_io:
        ret = -EIO;
 error:
-       up(&f->sem);
+       mutex_unlock(&f->sem);
        jffs2_do_clear_inode(c, f);
        iget_failed(inode);
        return ERR_PTR(ret);
@@ -388,9 +388,9 @@ int jffs2_remount_fs (struct super_block *sb, int *flags, char *data)
           Flush the writebuffer, if neccecary, else we loose it */
        if (!(sb->s_flags & MS_RDONLY)) {
                jffs2_stop_garbage_collect_thread(c);
-               down(&c->alloc_sem);
+               mutex_lock(&c->alloc_sem);
                jffs2_flush_wbuf_pad(c);
-               up(&c->alloc_sem);
+               mutex_unlock(&c->alloc_sem);
        }
 
        if (!(*flags & MS_RDONLY))
@@ -437,7 +437,7 @@ struct inode *jffs2_new_inode (struct inode *dir_i, int mode, struct jffs2_raw_i
 
        f = JFFS2_INODE_INFO(inode);
        jffs2_init_inode_info(f);
-       down(&f->sem);
+       mutex_lock(&f->sem);
 
        memset(ri, 0, sizeof(*ri));
        /* Set OS-specific defaults for new inodes */
index 59aeb9820435c93a7dd8b91f317d2bc4f83e8475..26c7992c45caef6d620203d486769b8b17b2c9a4 100644 (file)
@@ -126,7 +126,7 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
        int ret = 0, inum, nlink;
        int xattr = 0;
 
-       if (down_interruptible(&c->alloc_sem))
+       if (mutex_lock_interruptible(&c->alloc_sem))
                return -EINTR;
 
        for (;;) {
@@ -143,7 +143,7 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
                               c->unchecked_size);
                        jffs2_dbg_dump_block_lists_nolock(c);
                        spin_unlock(&c->erase_completion_lock);
-                       up(&c->alloc_sem);
+                       mutex_unlock(&c->alloc_sem);
                        return -ENOSPC;
                }
 
@@ -190,7 +190,7 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
                         made no progress in this case, but that should be OK */
                        c->checked_ino--;
 
-                       up(&c->alloc_sem);
+                       mutex_unlock(&c->alloc_sem);
                        sleep_on_spinunlock(&c->inocache_wq, &c->inocache_lock);
                        return 0;
 
@@ -210,7 +210,7 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
                        printk(KERN_WARNING "Returned error for crccheck of ino #%u. Expect badness...\n", ic->ino);
 
                jffs2_set_inocache_state(c, ic, INO_STATE_CHECKEDABSENT);
-               up(&c->alloc_sem);
+               mutex_unlock(&c->alloc_sem);
                return ret;
        }
 
@@ -223,7 +223,7 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
        if (!jeb) {
                D1 (printk(KERN_NOTICE "jffs2: Couldn't find erase block to garbage collect!\n"));
                spin_unlock(&c->erase_completion_lock);
-               up(&c->alloc_sem);
+               mutex_unlock(&c->alloc_sem);
                return -EIO;
        }
 
@@ -232,7 +232,7 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
           printk(KERN_DEBUG "Nextblock at  %08x, used_size %08x, dirty_size %08x, wasted_size %08x, free_size %08x\n", c->nextblock->offset, c->nextblock->used_size, c->nextblock->dirty_size, c->nextblock->wasted_size, c->nextblock->free_size));
 
        if (!jeb->used_size) {
-               up(&c->alloc_sem);
+               mutex_unlock(&c->alloc_sem);
                goto eraseit;
        }
 
@@ -248,7 +248,7 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
                               jeb->offset, jeb->free_size, jeb->dirty_size, jeb->used_size);
                        jeb->gc_node = raw;
                        spin_unlock(&c->erase_completion_lock);
-                       up(&c->alloc_sem);
+                       mutex_unlock(&c->alloc_sem);
                        BUG();
                }
        }
@@ -266,7 +266,7 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
                        /* Just mark it obsolete */
                        jffs2_mark_node_obsolete(c, raw);
                }
-               up(&c->alloc_sem);
+               mutex_unlock(&c->alloc_sem);
                goto eraseit_lock;
        }
 
@@ -334,7 +334,7 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
                */
                printk(KERN_CRIT "Inode #%u already in state %d in jffs2_garbage_collect_pass()!\n",
                       ic->ino, ic->state);
-               up(&c->alloc_sem);
+               mutex_unlock(&c->alloc_sem);
                spin_unlock(&c->inocache_lock);
                BUG();
 
@@ -345,7 +345,7 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
                   the alloc_sem() (for marking nodes invalid) so we must
                   drop the alloc_sem before sleeping. */
 
-               up(&c->alloc_sem);
+               mutex_unlock(&c->alloc_sem);
                D1(printk(KERN_DEBUG "jffs2_garbage_collect_pass() waiting for ino #%u in state %d\n",
                          ic->ino, ic->state));
                sleep_on_spinunlock(&c->inocache_wq, &c->inocache_lock);
@@ -416,7 +416,7 @@ int jffs2_garbage_collect_pass(struct jffs2_sb_info *c)
                ret = -ENOSPC;
        }
  release_sem:
-       up(&c->alloc_sem);
+       mutex_unlock(&c->alloc_sem);
 
  eraseit_lock:
        /* If we've finished this block, start it erasing */
@@ -445,7 +445,7 @@ static int jffs2_garbage_collect_live(struct jffs2_sb_info *c,  struct jffs2_era
        uint32_t start = 0, end = 0, nrfrags = 0;
        int ret = 0;
 
-       down(&f->sem);
+       mutex_lock(&f->sem);
 
        /* Now we have the lock for this inode. Check that it's still the one at the head
           of the list. */
@@ -525,7 +525,7 @@ static int jffs2_garbage_collect_live(struct jffs2_sb_info *c,  struct jffs2_era
                }
        }
  upnout:
-       up(&f->sem);
+       mutex_unlock(&f->sem);
 
        return ret;
 }
@@ -846,7 +846,7 @@ static int jffs2_garbage_collect_deletion_dirent(struct jffs2_sb_info *c, struct
                /* Prevent the erase code from nicking the obsolete node refs while
                   we're looking at them. I really don't like this extra lock but
                   can't see any alternative. Suggestions on a postcard to... */
-               down(&c->erase_free_sem);
+               mutex_lock(&c->erase_free_sem);
 
                for (raw = f->inocache->nodes; raw != (void *)f->inocache; raw = raw->next_in_ino) {
 
@@ -899,7 +899,7 @@ static int jffs2_garbage_collect_deletion_dirent(struct jffs2_sb_info *c, struct
                        /* OK. The name really does match. There really is still an older node on
                           the flash which our deletion dirent obsoletes. So we have to write out
                           a new deletion dirent to replace it */
-                       up(&c->erase_free_sem);
+                       mutex_unlock(&c->erase_free_sem);
 
                        D1(printk(KERN_DEBUG "Deletion dirent at %08x still obsoletes real dirent \"%s\" at %08x for ino #%u\n",
                                  ref_offset(fd->raw), fd->name, ref_offset(raw), je32_to_cpu(rd->ino)));
@@ -908,7 +908,7 @@ static int jffs2_garbage_collect_deletion_dirent(struct jffs2_sb_info *c, struct
                        return jffs2_garbage_collect_dirent(c, jeb, f, fd);
                }
 
-               up(&c->erase_free_sem);
+               mutex_unlock(&c->erase_free_sem);
                kfree(rd);
        }
 
index a841f4973a74824667b94e16f0cf7fe343ac82fa..b5427b5c94831de0b32824bc145ae011a43b6745 100644 (file)
@@ -24,7 +24,7 @@ struct jffs2_inode_info {
           before letting GC proceed. Or we'd have to put ugliness
           into the GC code so it didn't attempt to obtain the i_mutex
           for the inode(s) which are already locked */
-       struct semaphore sem;
+       struct mutex sem;
 
        /* The highest (datanode) version number used for this ino */
        uint32_t highest_version;
index 18fca2b9e53192355fe26ca16f71c76b7af35d93..d9c4b27575e8cf1293925c0921eb2e64f5748984 100644 (file)
@@ -16,7 +16,7 @@
 #include <linux/spinlock.h>
 #include <linux/workqueue.h>
 #include <linux/completion.h>
-#include <linux/semaphore.h>
+#include <linux/mutex.h>
 #include <linux/timer.h>
 #include <linux/wait.h>
 #include <linux/list.h>
@@ -44,7 +44,7 @@ struct jffs2_sb_info {
        struct completion gc_thread_start; /* GC thread start completion */
        struct completion gc_thread_exit; /* GC thread exit completion port */
 
-       struct semaphore alloc_sem;     /* Used to protect all the following
+       struct mutex alloc_sem;         /* Used to protect all the following
                                           fields, and also to protect against
                                           out-of-order writing of nodes. And GC. */
        uint32_t cleanmarker_size;      /* Size of an _inline_ CLEANMARKER
@@ -104,7 +104,7 @@ struct jffs2_sb_info {
        /* Sem to allow jffs2_garbage_collect_deletion_dirent to
           drop the erase_completion_lock while it's holding a pointer
           to an obsoleted node. I don't like this. Alternatives welcomed. */
-       struct semaphore erase_free_sem;
+       struct mutex erase_free_sem;
 
        uint32_t wbuf_pagesize; /* 0 for NOR and other flashes with no wbuf */
 
index a3e67a4ed675f723161b708ea035ff4f66cd0167..747a73f0aa4d3b8dcf25dfec74fd4a1631fb4a0d 100644 (file)
@@ -48,7 +48,7 @@ int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize,
        minsize = PAD(minsize);
 
        D1(printk(KERN_DEBUG "jffs2_reserve_space(): Requested 0x%x bytes\n", minsize));
-       down(&c->alloc_sem);
+       mutex_lock(&c->alloc_sem);
 
        D1(printk(KERN_DEBUG "jffs2_reserve_space(): alloc sem got\n"));
 
@@ -81,7 +81,7 @@ int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize,
                                          dirty, c->unchecked_size, c->sector_size));
 
                                spin_unlock(&c->erase_completion_lock);
-                               up(&c->alloc_sem);
+                               mutex_unlock(&c->alloc_sem);
                                return -ENOSPC;
                        }
 
@@ -104,11 +104,11 @@ int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize,
                                D1(printk(KERN_DEBUG "max. available size 0x%08x  < blocksneeded * sector_size 0x%08x, returning -ENOSPC\n",
                                          avail, blocksneeded * c->sector_size));
                                spin_unlock(&c->erase_completion_lock);
-                               up(&c->alloc_sem);
+                               mutex_unlock(&c->alloc_sem);
                                return -ENOSPC;
                        }
 
-                       up(&c->alloc_sem);
+                       mutex_unlock(&c->alloc_sem);
 
                        D1(printk(KERN_DEBUG "Triggering GC pass. nr_free_blocks %d, nr_erasing_blocks %d, free_size 0x%08x, dirty_size 0x%08x, wasted_size 0x%08x, used_size 0x%08x, erasing_size 0x%08x, bad_size 0x%08x (total 0x%08x of 0x%08x)\n",
                                  c->nr_free_blocks, c->nr_erasing_blocks, c->free_size, c->dirty_size, c->wasted_size, c->used_size, c->erasing_size, c->bad_size,
@@ -124,7 +124,7 @@ int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize,
                        if (signal_pending(current))
                                return -EINTR;
 
-                       down(&c->alloc_sem);
+                       mutex_lock(&c->alloc_sem);
                        spin_lock(&c->erase_completion_lock);
                }
 
@@ -137,7 +137,7 @@ int jffs2_reserve_space(struct jffs2_sb_info *c, uint32_t minsize,
        if (!ret)
                ret = jffs2_prealloc_raw_node_refs(c, c->nextblock, 1);
        if (ret)
-               up(&c->alloc_sem);
+               mutex_unlock(&c->alloc_sem);
        return ret;
 }
 
@@ -462,7 +462,7 @@ void jffs2_complete_reservation(struct jffs2_sb_info *c)
 {
        D1(printk(KERN_DEBUG "jffs2_complete_reservation()\n"));
        jffs2_garbage_collect_trigger(c);
-       up(&c->alloc_sem);
+       mutex_unlock(&c->alloc_sem);
 }
 
 static inline int on_list(struct list_head *obj, struct list_head *head)
@@ -511,7 +511,7 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
                   any jffs2_raw_node_refs. So we don't need to stop erases from
                   happening, or protect against people holding an obsolete
                   jffs2_raw_node_ref without the erase_completion_lock. */
-               down(&c->erase_free_sem);
+               mutex_lock(&c->erase_free_sem);
        }
 
        spin_lock(&c->erase_completion_lock);
@@ -714,7 +714,7 @@ void jffs2_mark_node_obsolete(struct jffs2_sb_info *c, struct jffs2_raw_node_ref
        }
 
  out_erase_sem:
-       up(&c->erase_free_sem);
+       mutex_unlock(&c->erase_free_sem);
 }
 
 int jffs2_thread_should_wake(struct jffs2_sb_info *c)
index e512a93d624954e04b70ab0a27bf85eb43a61fea..8a7cf1e8d68a44af99655b6b3f84eef08ee330d1 100644 (file)
@@ -1193,7 +1193,7 @@ static int jffs2_do_read_inode_internal(struct jffs2_sb_info *c,
                JFFS2_ERROR("failed to read from flash: error %d, %zd of %zd bytes read\n",
                        ret, retlen, sizeof(*latest_node));
                /* FIXME: If this fails, there seems to be a memory leak. Find it. */
-               up(&f->sem);
+               mutex_unlock(&f->sem);
                jffs2_do_clear_inode(c, f);
                return ret?ret:-EIO;
        }
@@ -1202,7 +1202,7 @@ static int jffs2_do_read_inode_internal(struct jffs2_sb_info *c,
        if (crc != je32_to_cpu(latest_node->node_crc)) {
                JFFS2_ERROR("CRC failed for read_inode of inode %u at physical location 0x%x\n",
                        f->inocache->ino, ref_offset(rii.latest_ref));
-               up(&f->sem);
+               mutex_unlock(&f->sem);
                jffs2_do_clear_inode(c, f);
                return -EIO;
        }
@@ -1242,7 +1242,7 @@ static int jffs2_do_read_inode_internal(struct jffs2_sb_info *c,
                        f->target = kmalloc(je32_to_cpu(latest_node->csize) + 1, GFP_KERNEL);
                        if (!f->target) {
                                JFFS2_ERROR("can't allocate %d bytes of memory for the symlink target path cache\n", je32_to_cpu(latest_node->csize));
-                               up(&f->sem);
+                               mutex_unlock(&f->sem);
                                jffs2_do_clear_inode(c, f);
                                return -ENOMEM;
                        }
@@ -1255,7 +1255,7 @@ static int jffs2_do_read_inode_internal(struct jffs2_sb_info *c,
                                        ret = -EIO;
                                kfree(f->target);
                                f->target = NULL;
-                               up(&f->sem);
+                               mutex_unlock(&f->sem);
                                jffs2_do_clear_inode(c, f);
                                return -ret;
                        }
@@ -1273,14 +1273,14 @@ static int jffs2_do_read_inode_internal(struct jffs2_sb_info *c,
                if (f->metadata) {
                        JFFS2_ERROR("Argh. Special inode #%u with mode 0%o had metadata node\n",
                               f->inocache->ino, jemode_to_cpu(latest_node->mode));
-                       up(&f->sem);
+                       mutex_unlock(&f->sem);
                        jffs2_do_clear_inode(c, f);
                        return -EIO;
                }
                if (!frag_first(&f->fragtree)) {
                        JFFS2_ERROR("Argh. Special inode #%u with mode 0%o has no fragments\n",
                               f->inocache->ino, jemode_to_cpu(latest_node->mode));
-                       up(&f->sem);
+                       mutex_unlock(&f->sem);
                        jffs2_do_clear_inode(c, f);
                        return -EIO;
                }
@@ -1289,7 +1289,7 @@ static int jffs2_do_read_inode_internal(struct jffs2_sb_info *c,
                        JFFS2_ERROR("Argh. Special inode #%u with mode 0x%x had more than one node\n",
                               f->inocache->ino, jemode_to_cpu(latest_node->mode));
                        /* FIXME: Deal with it - check crc32, check for duplicate node, check times and discard the older one */
-                       up(&f->sem);
+                       mutex_unlock(&f->sem);
                        jffs2_do_clear_inode(c, f);
                        return -EIO;
                }
@@ -1379,12 +1379,13 @@ int jffs2_do_crccheck_inode(struct jffs2_sb_info *c, struct jffs2_inode_cache *i
        if (!f)
                return -ENOMEM;
 
-       init_MUTEX_LOCKED(&f->sem);
+       mutex_init(&f->sem);
+       mutex_lock(&f->sem);
        f->inocache = ic;
 
        ret = jffs2_do_read_inode_internal(c, f, &n);
        if (!ret) {
-               up(&f->sem);
+               mutex_unlock(&f->sem);
                jffs2_do_clear_inode(c, f);
        }
        kfree (f);
@@ -1398,7 +1399,7 @@ void jffs2_do_clear_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f)
 
        jffs2_clear_acl(f);
        jffs2_xattr_delete_inode(c, f->inocache);
-       down(&f->sem);
+       mutex_lock(&f->sem);
        deleted = f->inocache && !f->inocache->nlink;
 
        if (f->inocache && f->inocache->state != INO_STATE_CHECKING)
@@ -1430,5 +1431,5 @@ void jffs2_do_clear_inode(struct jffs2_sb_info *c, struct jffs2_inode_info *f)
                        jffs2_del_ino_cache(c, f->inocache);
        }
 
-       up(&f->sem);
+       mutex_unlock(&f->sem);
 }
index 4677355996cc8c49a284e56a909502fe788cf234..f3353df178e707e8072e048e46b23753e5c88d5d 100644 (file)
@@ -47,7 +47,7 @@ static void jffs2_i_init_once(struct kmem_cache *cachep, void *foo)
 {
        struct jffs2_inode_info *ei = (struct jffs2_inode_info *) foo;
 
-       init_MUTEX(&ei->sem);
+       mutex_init(&ei->sem);
        inode_init_once(&ei->vfs_inode);
 }
 
@@ -55,9 +55,9 @@ static int jffs2_sync_fs(struct super_block *sb, int wait)
 {
        struct jffs2_sb_info *c = JFFS2_SB_INFO(sb);
 
-       down(&c->alloc_sem);
+       mutex_lock(&c->alloc_sem);
        jffs2_flush_wbuf_pad(c);
-       up(&c->alloc_sem);
+       mutex_unlock(&c->alloc_sem);
        return 0;
 }
 
@@ -95,8 +95,8 @@ static int jffs2_fill_super(struct super_block *sb, void *data, int silent)
 
        /* Initialize JFFS2 superblock locks, the further initialization will
         * be done later */
-       init_MUTEX(&c->alloc_sem);
-       init_MUTEX(&c->erase_free_sem);
+       mutex_init(&c->alloc_sem);
+       mutex_init(&c->erase_free_sem);
        init_waitqueue_head(&c->erase_wait);
        init_waitqueue_head(&c->inocache_wq);
        spin_lock_init(&c->erase_completion_lock);
@@ -125,9 +125,9 @@ static void jffs2_put_super (struct super_block *sb)
 
        D2(printk(KERN_DEBUG "jffs2: jffs2_put_super()\n"));
 
-       down(&c->alloc_sem);
+       mutex_lock(&c->alloc_sem);
        jffs2_flush_wbuf_pad(c);
-       up(&c->alloc_sem);
+       mutex_unlock(&c->alloc_sem);
 
        jffs2_sum_exit(c);
 
index ba49f19cff854f4d191d859311aad595d9c96b30..8de52b6076785816abf1625fbb2b64534a7c5610 100644 (file)
@@ -578,8 +578,8 @@ static int __jffs2_flush_wbuf(struct jffs2_sb_info *c, int pad)
        if (!jffs2_is_writebuffered(c))
                return 0;
 
-       if (!down_trylock(&c->alloc_sem)) {
-               up(&c->alloc_sem);
+       if (mutex_trylock(&c->alloc_sem)) {
+               mutex_unlock(&c->alloc_sem);
                printk(KERN_CRIT "jffs2_flush_wbuf() called with alloc_sem not locked!\n");
                BUG();
        }
@@ -702,10 +702,10 @@ int jffs2_flush_wbuf_gc(struct jffs2_sb_info *c, uint32_t ino)
        if (!c->wbuf)
                return 0;
 
-       down(&c->alloc_sem);
+       mutex_lock(&c->alloc_sem);
        if (!jffs2_wbuf_pending_for_ino(c, ino)) {
                D1(printk(KERN_DEBUG "Ino #%d not pending in wbuf. Returning\n", ino));
-               up(&c->alloc_sem);
+               mutex_unlock(&c->alloc_sem);
                return 0;
        }
 
@@ -725,14 +725,14 @@ int jffs2_flush_wbuf_gc(struct jffs2_sb_info *c, uint32_t ino)
        } else while (old_wbuf_len &&
                      old_wbuf_ofs == c->wbuf_ofs) {
 
-               up(&c->alloc_sem);
+               mutex_unlock(&c->alloc_sem);
 
                D1(printk(KERN_DEBUG "jffs2_flush_wbuf_gc() calls gc pass\n"));
 
                ret = jffs2_garbage_collect_pass(c);
                if (ret) {
                        /* GC failed. Flush it with padding instead */
-                       down(&c->alloc_sem);
+                       mutex_lock(&c->alloc_sem);
                        down_write(&c->wbuf_sem);
                        ret = __jffs2_flush_wbuf(c, PAD_ACCOUNTING);
                        /* retry flushing wbuf in case jffs2_wbuf_recover
@@ -742,12 +742,12 @@ int jffs2_flush_wbuf_gc(struct jffs2_sb_info *c, uint32_t ino)
                        up_write(&c->wbuf_sem);
                        break;
                }
-               down(&c->alloc_sem);
+               mutex_lock(&c->alloc_sem);
        }
 
        D1(printk(KERN_DEBUG "jffs2_flush_wbuf_gc() ends...\n"));
 
-       up(&c->alloc_sem);
+       mutex_unlock(&c->alloc_sem);
        return ret;
 }
 
index beade550909c3c039dcbd8da2ce55c2c477e0866..665fce9797d38d4569a92056f1391bdb5c0a9279 100644 (file)
@@ -137,12 +137,12 @@ struct jffs2_full_dnode *jffs2_write_dnode(struct jffs2_sb_info *c, struct jffs2
                                                             JFFS2_SUMMARY_INODE_SIZE);
                        } else {
                                /* Locking pain */
-                               up(&f->sem);
+                               mutex_unlock(&f->sem);
                                jffs2_complete_reservation(c);
 
                                ret = jffs2_reserve_space(c, sizeof(*ri) + datalen, &dummy,
                                                          alloc_mode, JFFS2_SUMMARY_INODE_SIZE);
-                               down(&f->sem);
+                               mutex_lock(&f->sem);
                        }
 
                        if (!ret) {
@@ -285,12 +285,12 @@ struct jffs2_full_dirent *jffs2_write_dirent(struct jffs2_sb_info *c, struct jff
                                                             JFFS2_SUMMARY_DIRENT_SIZE(namelen));
                        } else {
                                /* Locking pain */
-                               up(&f->sem);
+                               mutex_unlock(&f->sem);
                                jffs2_complete_reservation(c);
 
                                ret = jffs2_reserve_space(c, sizeof(*rd) + namelen, &dummy,
                                                          alloc_mode, JFFS2_SUMMARY_DIRENT_SIZE(namelen));
-                               down(&f->sem);
+                               mutex_lock(&f->sem);
                        }
 
                        if (!ret) {
@@ -353,7 +353,7 @@ int jffs2_write_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
                        D1(printk(KERN_DEBUG "jffs2_reserve_space returned %d\n", ret));
                        break;
                }
-               down(&f->sem);
+               mutex_lock(&f->sem);
                datalen = min_t(uint32_t, writelen, PAGE_CACHE_SIZE - (offset & (PAGE_CACHE_SIZE-1)));
                cdatalen = min_t(uint32_t, alloclen - sizeof(*ri), datalen);
 
@@ -381,7 +381,7 @@ int jffs2_write_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
 
                if (IS_ERR(fn)) {
                        ret = PTR_ERR(fn);
-                       up(&f->sem);
+                       mutex_unlock(&f->sem);
                        jffs2_complete_reservation(c);
                        if (!retried) {
                                /* Write error to be retried */
@@ -403,11 +403,11 @@ int jffs2_write_inode_range(struct jffs2_sb_info *c, struct jffs2_inode_info *f,
                        jffs2_mark_node_obsolete(c, fn->raw);
                        jffs2_free_full_dnode(fn);
 
-                       up(&f->sem);
+                       mutex_unlock(&f->sem);
                        jffs2_complete_reservation(c);
                        break;
                }
-               up(&f->sem);
+               mutex_unlock(&f->sem);
                jffs2_complete_reservation(c);
                if (!datalen) {
                        printk(KERN_WARNING "Eep. We didn't actually write any data in jffs2_write_inode_range()\n");
@@ -439,7 +439,7 @@ int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, str
                                JFFS2_SUMMARY_INODE_SIZE);
        D1(printk(KERN_DEBUG "jffs2_do_create(): reserved 0x%x bytes\n", alloclen));
        if (ret) {
-               up(&f->sem);
+               mutex_unlock(&f->sem);
                return ret;
        }
 
@@ -454,7 +454,7 @@ int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, str
        if (IS_ERR(fn)) {
                D1(printk(KERN_DEBUG "jffs2_write_dnode() failed\n"));
                /* Eeek. Wave bye bye */
-               up(&f->sem);
+               mutex_unlock(&f->sem);
                jffs2_complete_reservation(c);
                return PTR_ERR(fn);
        }
@@ -463,7 +463,7 @@ int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, str
        */
        f->metadata = fn;
 
-       up(&f->sem);
+       mutex_unlock(&f->sem);
        jffs2_complete_reservation(c);
 
        ret = jffs2_init_security(&f->vfs_inode, &dir_f->vfs_inode);
@@ -489,7 +489,7 @@ int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, str
                return -ENOMEM;
        }
 
-       down(&dir_f->sem);
+       mutex_lock(&dir_f->sem);
 
        rd->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
        rd->nodetype = cpu_to_je16(JFFS2_NODETYPE_DIRENT);
@@ -513,7 +513,7 @@ int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, str
                /* dirent failed to write. Delete the inode normally
                   as if it were the final unlink() */
                jffs2_complete_reservation(c);
-               up(&dir_f->sem);
+               mutex_unlock(&dir_f->sem);
                return PTR_ERR(fd);
        }
 
@@ -522,7 +522,7 @@ int jffs2_do_create(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, str
        jffs2_add_fd_to_list(c, fd, &dir_f->dents);
 
        jffs2_complete_reservation(c);
-       up(&dir_f->sem);
+       mutex_unlock(&dir_f->sem);
 
        return 0;
 }
@@ -551,7 +551,7 @@ int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
                        return ret;
                }
 
-               down(&dir_f->sem);
+               mutex_lock(&dir_f->sem);
 
                /* Build a deletion node */
                rd->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
@@ -574,21 +574,21 @@ int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
 
                if (IS_ERR(fd)) {
                        jffs2_complete_reservation(c);
-                       up(&dir_f->sem);
+                       mutex_unlock(&dir_f->sem);
                        return PTR_ERR(fd);
                }
 
                /* File it. This will mark the old one obsolete. */
                jffs2_add_fd_to_list(c, fd, &dir_f->dents);
-               up(&dir_f->sem);
+               mutex_unlock(&dir_f->sem);
        } else {
                uint32_t nhash = full_name_hash(name, namelen);
 
                fd = dir_f->dents;
                /* We don't actually want to reserve any space, but we do
                   want to be holding the alloc_sem when we write to flash */
-               down(&c->alloc_sem);
-               down(&dir_f->sem);
+               mutex_lock(&c->alloc_sem);
+               mutex_lock(&dir_f->sem);
 
                for (fd = dir_f->dents; fd; fd = fd->next) {
                        if (fd->nhash == nhash &&
@@ -607,7 +607,7 @@ int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
                                break;
                        }
                }
-               up(&dir_f->sem);
+               mutex_unlock(&dir_f->sem);
        }
 
        /* dead_f is NULL if this was a rename not a real unlink */
@@ -615,7 +615,7 @@ int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
           pointing to an inode which didn't exist. */
        if (dead_f && dead_f->inocache) {
 
-               down(&dead_f->sem);
+               mutex_lock(&dead_f->sem);
 
                if (S_ISDIR(OFNI_EDONI_2SFFJ(dead_f)->i_mode)) {
                        while (dead_f->dents) {
@@ -639,7 +639,7 @@ int jffs2_do_unlink(struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f,
 
                dead_f->inocache->nlink--;
                /* NB: Caller must set inode nlink if appropriate */
-               up(&dead_f->sem);
+               mutex_unlock(&dead_f->sem);
        }
 
        jffs2_complete_reservation(c);
@@ -666,7 +666,7 @@ int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint
                return ret;
        }
 
-       down(&dir_f->sem);
+       mutex_lock(&dir_f->sem);
 
        /* Build a deletion node */
        rd->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
@@ -691,7 +691,7 @@ int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint
 
        if (IS_ERR(fd)) {
                jffs2_complete_reservation(c);
-               up(&dir_f->sem);
+               mutex_unlock(&dir_f->sem);
                return PTR_ERR(fd);
        }
 
@@ -699,7 +699,7 @@ int jffs2_do_link (struct jffs2_sb_info *c, struct jffs2_inode_info *dir_f, uint
        jffs2_add_fd_to_list(c, fd, &dir_f->dents);
 
        jffs2_complete_reservation(c);
-       up(&dir_f->sem);
+       mutex_unlock(&dir_f->sem);
 
        return 0;
 }