From 2b47c3611de05c585e2d81204f6c7e3e255a3461 Mon Sep 17 00:00:00 2001 From: Mathieu Desnoyers Date: Tue, 16 Oct 2007 23:27:21 -0700 Subject: [PATCH] Fix f_version type: should be u64 instead of unsigned long Fix f_version type: should be u64 instead of long There is a type inconsistency between struct inode i_version and struct file f_version. fs.h: struct inode u64 i_version; and struct file unsigned long f_version; Users do: fs/ext3/dir.c: if (filp->f_version != inode->i_version) { So why isn't f_version a u64 ? It becomes a problem if versions gets higher than 2^32 and we are on an architecture where longs are 32 bits. This patch changes the f_version type to u64, and updates the users accordingly. It applies to 2.6.23-rc2-mm2. Signed-off-by: Mathieu Desnoyers Cc: Martin Bligh Cc: "Randy.Dunlap" Cc: Al Viro Cc: Cc: Mark Fasheh Cc: Christoph Hellwig Cc: "J. Bruce Fields" Cc: Trond Myklebust Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/ext3/dir.c | 2 +- fs/ext4/dir.c | 2 +- fs/ocfs2/dir.c | 10 +++++----- fs/proc/base.c | 4 ++-- include/linux/fs.h | 2 +- include/linux/seq_file.h | 2 +- 6 files changed, 11 insertions(+), 11 deletions(-) diff --git a/fs/ext3/dir.c b/fs/ext3/dir.c index c2c3491b18cf..fd4b6dd71150 100644 --- a/fs/ext3/dir.c +++ b/fs/ext3/dir.c @@ -210,7 +210,7 @@ revalidate: * not the directory has been modified * during the copy operation. */ - unsigned long version = filp->f_version; + u64 version = filp->f_version; error = filldir(dirent, de->name, de->name_len, diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c index e11890acfa21..0fb1e62b20d0 100644 --- a/fs/ext4/dir.c +++ b/fs/ext4/dir.c @@ -210,7 +210,7 @@ revalidate: * not the directory has been modified * during the copy operation. */ - unsigned long version = filp->f_version; + u64 version = filp->f_version; error = filldir(dirent, de->name, de->name_len, diff --git a/fs/ocfs2/dir.c b/fs/ocfs2/dir.c index 7453b70c1a19..6a2f143e269c 100644 --- a/fs/ocfs2/dir.c +++ b/fs/ocfs2/dir.c @@ -586,7 +586,7 @@ bail: } static int ocfs2_dir_foreach_blk_id(struct inode *inode, - unsigned long *f_version, + u64 *f_version, loff_t *f_pos, void *priv, filldir_t filldir, int *filldir_err) { @@ -648,7 +648,7 @@ revalidate: * not the directory has been modified * during the copy operation. */ - unsigned long version = *f_version; + u64 version = *f_version; unsigned char d_type = DT_UNKNOWN; if (de->file_type < OCFS2_FT_MAX) @@ -677,7 +677,7 @@ out: } static int ocfs2_dir_foreach_blk_el(struct inode *inode, - unsigned long *f_version, + u64 *f_version, loff_t *f_pos, void *priv, filldir_t filldir, int *filldir_err) { @@ -798,7 +798,7 @@ out: return stored; } -static int ocfs2_dir_foreach_blk(struct inode *inode, unsigned long *f_version, +static int ocfs2_dir_foreach_blk(struct inode *inode, u64 *f_version, loff_t *f_pos, void *priv, filldir_t filldir, int *filldir_err) { @@ -818,7 +818,7 @@ int ocfs2_dir_foreach(struct inode *inode, loff_t *f_pos, void *priv, filldir_t filldir) { int ret = 0, filldir_err = 0; - unsigned long version = inode->i_version; + u64 version = inode->i_version; while (*f_pos < i_size_read(inode)) { ret = ocfs2_dir_foreach_blk(inode, &version, f_pos, priv, diff --git a/fs/proc/base.c b/fs/proc/base.c index 78fdfea1a7f8..ea115d4c9f59 100644 --- a/fs/proc/base.c +++ b/fs/proc/base.c @@ -2586,7 +2586,7 @@ static int proc_task_readdir(struct file * filp, void * dirent, filldir_t filldi /* f_version caches the tgid value that the last readdir call couldn't * return. lseek aka telldir automagically resets f_version to 0. */ - tid = filp->f_version; + tid = (int)filp->f_version; filp->f_version = 0; for (task = first_tid(leader, tid, pos - 2); task; @@ -2595,7 +2595,7 @@ static int proc_task_readdir(struct file * filp, void * dirent, filldir_t filldi if (proc_task_fill_cache(filp, dirent, filldir, task, tid) < 0) { /* returning this tgid failed, save it as the first * pid for the next readir call */ - filp->f_version = tid; + filp->f_version = (u64)tid; put_task_struct(task); break; } diff --git a/include/linux/fs.h b/include/linux/fs.h index bb89a5dfe9ad..30aca3399450 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -792,7 +792,7 @@ struct file { unsigned int f_uid, f_gid; struct file_ra_state f_ra; - unsigned long f_version; + u64 f_version; #ifdef CONFIG_SECURITY void *f_security; #endif diff --git a/include/linux/seq_file.h b/include/linux/seq_file.h index 8bf1e05115b4..ebbc02b325fc 100644 --- a/include/linux/seq_file.h +++ b/include/linux/seq_file.h @@ -18,7 +18,7 @@ struct seq_file { size_t from; size_t count; loff_t index; - loff_t version; + u64 version; struct mutex lock; const struct seq_operations *op; void *private; -- 2.20.1