Prev: [PATCH 5/7] ext2: Move ext2_write_super() out of ext2_setup_super()
Next: [PATCH 2/7] ext2: Set the write time in ext2_sync_fs()
From: Jan Blunck on 14 Apr 2010 08:40
Both function originally did similar things except that ext2_sync_super()
is returning after the call to sync_dirty_buffer(sbh). Therefore this
patch adds a wait flag to tell ext2_sync_super() if it has to call
sync_dirty_buffer() to wait for in-progress I/O to finish.

Signed-off-by: Jan Blunck <jblunck(a)suse.de>
---
fs/ext2/super.c | 28 +++++++++-------------------
1 files changed, 9 insertions(+), 19 deletions(-)

diff --git a/fs/ext2/super.c b/fs/ext2/super.c
index 09a88bf..a304c54 100644
--- a/fs/ext2/super.c
+++ b/fs/ext2/super.c
@@ -39,7 +39,7 @@
#include "xip.h"

static void ext2_sync_super(struct super_block *sb,
- struct ext2_super_block *es);
+ struct ext2_super_block *es, int wait);
static int ext2_remount (struct super_block * sb, int * flags, char * data);
static int ext2_statfs (struct dentry * dentry, struct kstatfs * buf);
static int ext2_sync_fs(struct super_block *sb, int wait);
@@ -54,7 +54,7 @@ void ext2_error (struct super_block * sb, const char * function,
if (!(sb->s_flags & MS_RDONLY)) {
sbi->s_mount_state |= EXT2_ERROR_FS;
es->s_state |= cpu_to_le16(EXT2_ERROR_FS);
- ext2_sync_super(sb, es);
+ ext2_sync_super(sb, es, 1);
}

va_start(args, fmt);
@@ -125,7 +125,7 @@ static void ext2_put_super (struct super_block * sb)
struct ext2_super_block *es = sbi->s_es;

es->s_state = cpu_to_le16(sbi->s_mount_state);
- ext2_sync_super(sb, es);
+ ext2_sync_super(sb, es, 1);
}
db_count = sbi->s_gdb_count;
for (i = 0; i < db_count; i++)
@@ -1127,23 +1127,16 @@ static void ext2_clear_super_error(struct super_block *sb)
}
}

-static void ext2_commit_super (struct super_block * sb,
- struct ext2_super_block * es)
-{
- ext2_clear_super_error(sb);
- es->s_wtime = cpu_to_le32(get_seconds());
- mark_buffer_dirty(EXT2_SB(sb)->s_sbh);
- sb->s_dirt = 0;
-}
-
-static void ext2_sync_super(struct super_block *sb, struct ext2_super_block *es)
+static void ext2_sync_super(struct super_block *sb, struct ext2_super_block *es,
+ int wait)
{
ext2_clear_super_error(sb);
es->s_free_blocks_count = cpu_to_le32(ext2_count_free_blocks(sb));
es->s_free_inodes_count = cpu_to_le32(ext2_count_free_inodes(sb));
es->s_wtime = cpu_to_le32(get_seconds());
mark_buffer_dirty(EXT2_SB(sb)->s_sbh);
- sync_dirty_buffer(EXT2_SB(sb)->s_sbh);
+ if (wait)
+ sync_dirty_buffer(EXT2_SB(sb)->s_sbh);
sb->s_dirt = 0;
}

@@ -1166,11 +1159,8 @@ static int ext2_sync_fs(struct super_block *sb, int wait)
if (es->s_state & cpu_to_le16(EXT2_VALID_FS)) {
ext2_debug("setting valid to 0\n");
es->s_state &= cpu_to_le16(~EXT2_VALID_FS);
- ext2_sync_super(sb, es);
- } else {
- ext2_commit_super(sb, es);
}
- sb->s_dirt = 0;
+ ext2_sync_super(sb, es, wait);
unlock_kernel();

return 0;
@@ -1268,7 +1258,7 @@ static int ext2_remount (struct super_block * sb, int * flags, char * data)
if (!ext2_setup_super (sb, es, 0))
sb->s_flags &= ~MS_RDONLY;
}
- ext2_sync_super(sb, es);
+ ext2_sync_super(sb, es, 1);
unlock_kernel();
return 0;
restore_opts:
--
1.6.4.2

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo(a)vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
 | 
Pages: 1
Prev: [PATCH 5/7] ext2: Move ext2_write_super() out of ext2_setup_super()
Next: [PATCH 2/7] ext2: Set the write time in ext2_sync_fs()