From: Andrew Price <anpr...@redhat.com>
Commit 86066914edff2316cbed63aac8a87d5001441a16 "gfs2: Don't support
fallocate on jdata files" removed the ability of gfs2_grow to reserve
space at the end of the rindex, which could prevent a second gfs2_grow
from succeeding if the fs is full. Allow fallocate to work on the rindex
once again.
Signed-off-by: Andrew Price <anpr...@redhat.com>
Signed-off-by: Bob Peterson <rpete...@redhat.com>
---
fs/gfs2/file.c | 6 +++++-
1 file changed, 5 insertions(+), 1 deletion(-)
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 6fe2a59..c2062a1 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -911,11 +911,15 @@ static long __gfs2_fallocate(struct file *file, int mode,
loff_t offset, loff_t
static long gfs2_fallocate(struct file *file, int mode, loff_t offset, loff_t
len)
{
struct inode *inode = file_inode(file);
+ struct gfs2_sbd *sdp = GFS2_SB(inode);
struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_holder gh;
int ret;
- if ((mode & ~FALLOC_FL_KEEP_SIZE) || gfs2_is_jdata(ip))
+ if (mode & ~FALLOC_FL_KEEP_SIZE)
+ return -EOPNOTSUPP;
+ /* fallocate is needed by gfs2_grow to reserve space in the rindex */
+ if (gfs2_is_jdata(ip) && inode != sdp->sd_rindex)
return -EOPNOTSUPP;
inode_lock(inode);
--
2.9.3
