A-Team_Digital_Solutions/android_kernel_motorola_sm6375
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->write_super lock_super pushdown

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Push down lock_super into ->write_super instances and remove it from the
caller.

Following filesystem don't need ->s_lock in ->write_super and are skipped:

 * bfs, nilfs2 - no other uses of s_lock and have internal locks in
	->write_super
 * ext2 - uses BKL in ext2_write_super and has internal calls without s_lock
 * reiserfs - no other uses of s_lock as has reiserfs_write_lock (BKL) in
 	->write_super
 * xfs - no other uses of s_lock and uses internal lock (buffer lock on
	superblock buffer) to serialize ->write_super.  Also xfs_fs_write_super
	is superflous and will go away in the next merge window

Signed-off-by: Christoph Hellwig <[email protected]>
Signed-off-by: Al Viro <[email protected]>
This commit is contained in:
Christoph Hellwig 2009-05-11 23:35:03 +02:00 • committed by Al Viro
commit ebc1ac1645
11 changed files with 32 additions and 17 deletions
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2
fs/sysv/inode.c
View file

@ -37,6 +37,7 @@ static void sysv_write_super(struct super_block *sb)
struct sysv_sb_info *sbi = SYSV_SB(sb);
unsigned long time = get_seconds(), old_time;
lock_super(sb);
lock_kernel();
if (sb->s_flags & MS_RDONLY)
goto clean;
@ -56,6 +57,7 @@ static void sysv_write_super(struct super_block *sb)
clean:
sb->s_dirt = 0;
unlock_kernel();
unlock_super(sb);
}
static int sysv_remount(struct super_block *sb, int *flags, char *data)