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authorBob Peterson <rpeterso@redhat.com>2013-05-28 18:04:44 +0400
committerSteven Whitehouse <swhiteho@redhat.com>2013-06-03 19:38:58 +0400
commit2b3dcf35810ff02ad0e785527a25c1b13bf82b19 (patch)
tree0ab2a2f709290e2eb4d74d385a7d832929e3768c /fs/gfs2/bmap.c
parent4a586812055dbd2588b0836ab758f6b9670c3949 (diff)
downloadlinux-2b3dcf35810ff02ad0e785527a25c1b13bf82b19.tar.xz
GFS2: Increase i_writecount during gfs2_setattr_size
This patch calls get_write_access in a few functions. This merely increases inode->i_writecount for the duration of the function. That will ensure that any file closes won't delete the inode's multi-block reservation while the function is running. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Diffstat (limited to 'fs/gfs2/bmap.c')
-rw-r--r--fs/gfs2/bmap.c17
1 files changed, 13 insertions, 4 deletions
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c
index 1dc9a13ce6bb..93b5809c20bb 100644
--- a/fs/gfs2/bmap.c
+++ b/fs/gfs2/bmap.c
@@ -1286,17 +1286,26 @@ int gfs2_setattr_size(struct inode *inode, u64 newsize)
if (ret)
return ret;
+ ret = get_write_access(inode);
+ if (ret)
+ return ret;
+
inode_dio_wait(inode);
ret = gfs2_rs_alloc(GFS2_I(inode));
if (ret)
- return ret;
+ goto out;
oldsize = inode->i_size;
- if (newsize >= oldsize)
- return do_grow(inode, newsize);
+ if (newsize >= oldsize) {
+ ret = do_grow(inode, newsize);
+ goto out;
+ }
- return do_shrink(inode, oldsize, newsize);
+ ret = do_shrink(inode, oldsize, newsize);
+out:
+ put_write_access(inode);
+ return ret;
}
int gfs2_truncatei_resume(struct gfs2_inode *ip)