luck/tmp_suning_uos_patched
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xfs: remove SYNC_IOWAIT

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We want to wait for all I/O to finish when we do data integrity syncs.  So
there is no reason to keep SYNC_WAIT separate from SYNC_IOWAIT.  This
causes a little change in behaviour for the ENOSPC flushing code which now
does a second submission and wait of buffered I/O, but that should finish
ASAP as we already did an asynchronous writeout earlier.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Josef 'Jeff' Sipek <jeffpc@josefsipek.net>
Reviewed-by: Eric Sandeen <sandeen@sandeen.net>
This commit is contained in:
Christoph Hellwig 2009-06-08 15:37:11 +02:00 committed by Christoph Hellwig
parent 075fe10286
commit b0710ccc6d
2 changed files with 4 additions and 5 deletions
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8
fs/xfs/linux-2.6/xfs_sync.c
View File

@ -227,7 +227,7 @@ xfs_sync_inode_data(
xfs_iunlock(ip, XFS_IOLOCK_SHARED);
out_wait:
if (flags & SYNC_IOWAIT)
if (flags & SYNC_WAIT)
xfs_ioend_wait(ip);
IRELE(ip);
return error;
@ -278,7 +278,7 @@ xfs_sync_data(
{
int error;
ASSERT((flags & ~(SYNC_TRYLOCK|SYNC_WAIT|SYNC_IOWAIT)) == 0);
ASSERT((flags & ~(SYNC_TRYLOCK|SYNC_WAIT)) == 0);
error = xfs_inode_ag_iterator(mp, xfs_sync_inode_data, flags,
XFS_ICI_NO_TAG);
@ -422,7 +422,7 @@ xfs_quiesce_data(
xfs_filestream_flush(mp);
/* push and block */
xfs_sync_data(mp, SYNC_WAIT|SYNC_IOWAIT);
xfs_sync_data(mp, SYNC_WAIT);
xfs_qm_sync(mp, SYNC_WAIT);
/* write superblock and hoover up shutdown errors */
@ -535,7 +535,7 @@ xfs_flush_inodes_work(
{
struct inode *inode = arg;
xfs_sync_data(mp, SYNC_TRYLOCK);
xfs_sync_data(mp, SYNC_TRYLOCK | SYNC_IOWAIT);
xfs_sync_data(mp, SYNC_TRYLOCK | SYNC_WAIT);
iput(inode);
}

1
fs/xfs/linux-2.6/xfs_sync.h
View File

@ -31,7 +31,6 @@ typedef struct xfs_sync_work {
#define SYNC_WAIT 0x0004 /* wait for i/o to complete */
#define SYNC_BDFLUSH 0x0008 /* BDFLUSH is calling -- don't block */
#define SYNC_IOWAIT 0x0010 /* wait for all I/O to complete */
#define SYNC_TRYLOCK 0x0020 /* only try to lock inodes */
int xfs_syncd_init(struct xfs_mount *mp);