Merge tag 'v3.10.103' into update

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / fs / ext4 / inode.c

diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 221b58298847b5f0f99d2602ccf81b179ce6afa1..5ee08a717fee20b551060917e4aced49a51a4ef6 100644 (file)
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -46,6 +46,7 @@
 #include "truncate.h"
 
 #include <trace/events/ext4.h>
+#include <linux/blkdev.h>
 
 #define MPAGE_DA_EXTENT_TAIL 0x01
 
@@ -984,6 +985,13 @@ static int ext4_write_begin(struct file *file, struct address_space *mapping,
        struct page *page;
        pgoff_t index;
        unsigned from, to;
+#if defined(FEATURE_STORAGE_PID_LOGGER)
+               extern unsigned char *page_logger;
+               struct page_pid_logger *tmp_logger;
+               unsigned long page_index;
+               extern spinlock_t g_locker;
+               unsigned long g_flags;
+#endif
 
        trace_ext4_write_begin(inode, pos, len, flags);
        /*
@@ -1079,6 +1087,24 @@ retry_journal:
                return ret;
        }
        *pagep = page;
+#if defined(FEATURE_STORAGE_PID_LOGGER)
+               if( page_logger && (*pagep)) {
+                       //#if defined(CONFIG_FLATMEM)
+                       //page_index = (unsigned long)((*pagep) - mem_map) ;
+                       //#else
+                       page_index = (unsigned long)(__page_to_pfn(*pagep))- PHYS_PFN_OFFSET;
+                       //#endif
+                       tmp_logger =((struct page_pid_logger *)page_logger) + page_index;
+                       spin_lock_irqsave(&g_locker, g_flags);
+                       if( page_index < num_physpages) {
+                               if( tmp_logger->pid1 == 0XFFFF)
+                                       tmp_logger->pid1 = current->pid;
+                               else if( tmp_logger->pid1 != current->pid)
+                                       tmp_logger->pid2 = current->pid;
+                       }
+                       spin_unlock_irqrestore(&g_locker, g_flags);
+               }
+#endif
        return ret;
 }
 
@@ -3616,6 +3642,7 @@ int ext4_can_truncate(struct inode *inode)
 
 int ext4_punch_hole(struct file *file, loff_t offset, loff_t length)
 {
+#if 0
        struct inode *inode = file_inode(file);
        struct super_block *sb = inode->i_sb;
        ext4_lblk_t first_block, stop_block;
@@ -3801,6 +3828,12 @@ out_dio:
 out_mutex:
        mutex_unlock(&inode->i_mutex);
        return ret;
+#else
+       /*
+        * Disabled as per b/28760453
+        */
+       return -EOPNOTSUPP;
+#endif
 }
 
 /*
@@ -4063,6 +4096,10 @@ make_io:
                trace_ext4_load_inode(inode);
                get_bh(bh);
                bh->b_end_io = end_buffer_read_sync;
+#ifdef FEATURE_STORAGE_META_LOG
+               if( bh && bh->b_bdev && bh->b_bdev->bd_disk)
+                       set_metadata_rw_status(bh->b_bdev->bd_disk->first_minor, WAIT_READ_CNT);
+#endif
                submit_bh(READ | REQ_META | REQ_PRIO, bh);
                wait_on_buffer(bh);
                if (!buffer_uptodate(bh)) {