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gfs2: Re-enable fallocate for the rindex 

Commit 86066914ed "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 <anprice@redhat.com>
Signed-off-by: Bob Peterson <rpeterso@redhat.com>
This commit is contained in:
Andrew Price 2017-04-05 11:45:26 -04:00 committed by Bob Peterson
parent d4da31986c
commit d4d7fc12b6
1 changed files with 5 additions and 1 deletions
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6
fs/gfs2/file.c
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@ -911,11 +911,15 @@ out_qunlock:
static long gfs2_fallocate(struct file *file, int mode, loff_t offset, loff_t len) static long gfs2_fallocate(struct file *file, int mode, loff_t offset, loff_t len)
{ {
struct inode *inode = file_inode(file); struct inode *inode = file_inode(file);
struct gfs2_sbd *sdp = GFS2_SB(inode);
struct gfs2_inode *ip = GFS2_I(inode); struct gfs2_inode *ip = GFS2_I(inode);
struct gfs2_holder gh; struct gfs2_holder gh;
int ret; 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; return -EOPNOTSUPP;
inode_lock(inode); inode_lock(inode);