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xfs: log file size updates as part of unwritten extent conversion

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If we convert and unwritten extent past the current i_size log the size update
as part of the extent manipulation transactions instead of doing an unlogged
metadata update later.

Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mark Tinguely <tinguely@sgi.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
This commit is contained in:
Christoph Hellwig 2012-02-29 09:53:50 +00:00 committed by Ben Myers
parent 6923e686f1
commit 84803fb782
2 changed files with 24 additions and 6 deletions
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11
fs/xfs/xfs_aops.c
View file

@ -179,13 +179,14 @@ xfs_end_io(
ioend->io_error = -error;
goto done;
}
} else {
/*
* We might have to update the on-disk file size after
* extending writes.
*/
xfs_setfilesize(ioend);
}
/*
* We might have to update the on-disk file size after extending
* writes.
*/
xfs_setfilesize(ioend);
done:
xfs_destroy_ioend(ioend);
}

19
fs/xfs/xfs_iomap.c
View file

@ -31,6 +31,7 @@
#include "xfs_ialloc_btree.h"
#include "xfs_dinode.h"
#include "xfs_inode.h"
#include "xfs_inode_item.h"
#include "xfs_btree.h"
#include "xfs_bmap.h"
#include "xfs_rtalloc.h"
@ -645,6 +646,7 @@ xfs_iomap_write_unwritten(
xfs_trans_t *tp;
xfs_bmbt_irec_t imap;
xfs_bmap_free_t free_list;
xfs_fsize_t i_size;
uint resblks;
int committed;
int error;
@ -705,7 +707,22 @@ xfs_iomap_write_unwritten(
if (error)
goto error_on_bmapi_transaction;
error = xfs_bmap_finish(&(tp), &(free_list), &committed);
/*
* Log the updated inode size as we go. We have to be careful
* to only log it up to the actual write offset if it is
* halfway into a block.
*/
i_size = XFS_FSB_TO_B(mp, offset_fsb + count_fsb);
if (i_size > offset + count)
i_size = offset + count;
i_size = xfs_new_eof(ip, i_size);
if (i_size) {
ip->i_d.di_size = i_size;
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
}
error = xfs_bmap_finish(&tp, &free_list, &committed);
if (error)
goto error_on_bmapi_transaction;