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authorBrian Foster <bfoster@redhat.com>2014-09-23 09:39:05 +0400
committerDave Chinner <david@fromorbit.com>2014-09-23 09:39:05 +0400
commit8b5279e33f241a074a9c8649bba8f77a2167b798 (patch)
treefaf3c22feb56241ec43f76bf339414c8afd13f4d /fs/xfs
parentf71721d061e872a39b2680d13f309c1eb6893438 (diff)
downloadlinux-8b5279e33f241a074a9c8649bba8f77a2167b798.tar.xz
xfs: only writeback and truncate pages for the freed range
xfs_free_file_space() only affects the range of the file for which space is being freed. It currently writes and truncates the page cache from the start offset of the free to EOF. Modify xfs_free_file_space() to write back and truncate page cache of just the range being freed. Signed-off-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/xfs')
-rw-r--r--fs/xfs/xfs_bmap_util.c10
1 files changed, 6 insertions, 4 deletions
diff --git a/fs/xfs/xfs_bmap_util.c b/fs/xfs/xfs_bmap_util.c
index eae763f4600e..809ae7d395c3 100644
--- a/fs/xfs/xfs_bmap_util.c
+++ b/fs/xfs/xfs_bmap_util.c
@@ -1205,6 +1205,7 @@ xfs_free_file_space(
xfs_bmap_free_t free_list;
xfs_bmbt_irec_t imap;
xfs_off_t ioffset;
+ xfs_off_t iendoffset;
xfs_extlen_t mod=0;
xfs_mount_t *mp;
int nimap;
@@ -1233,12 +1234,13 @@ xfs_free_file_space(
inode_dio_wait(VFS_I(ip));
rounding = max_t(xfs_off_t, 1 << mp->m_sb.sb_blocklog, PAGE_CACHE_SIZE);
- ioffset = offset & ~(rounding - 1);
- error = filemap_write_and_wait_range(VFS_I(ip)->i_mapping,
- ioffset, -1);
+ ioffset = round_down(offset, rounding);
+ iendoffset = round_up(offset + len, rounding) - 1;
+ error = filemap_write_and_wait_range(VFS_I(ip)->i_mapping, ioffset,
+ iendoffset);
if (error)
goto out;
- truncate_pagecache_range(VFS_I(ip), ioffset, -1);
+ truncate_pagecache_range(VFS_I(ip), ioffset, iendoffset);
/*
* Need to zero the stuff we're not freeing, on disk.