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authorAndreas Gruenbacher <agruenba@redhat.com>2017-12-14 17:11:03 +0100
committerAndreas Gruenbacher <agruenba@redhat.com>2018-01-18 21:15:58 +0100
commit4e56a6411fbce6f859566e17298114c2434391a4 (patch)
tree9619a913d0176f33b2dae824439a94e74cf50693 /fs/gfs2/file.c
parent10d2cf94c23d48ef1b141084216e7580011e4790 (diff)
downloadlinux-4e56a6411fbce6f859566e17298114c2434391a4.tar.bz2
gfs2: Implement fallocate(FALLOC_FL_PUNCH_HOLE)
Implement the top-level bits of punching a hole into a file. Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com> Signed-off-by: Bob Peterson <rpeterso@redhat.com>
Diffstat (limited to 'fs/gfs2/file.c')
-rw-r--r--fs/gfs2/file.c19
1 files changed, 12 insertions, 7 deletions
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 58705ef8643a..bd60dc682676 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -924,7 +924,7 @@ static long gfs2_fallocate(struct file *file, int mode, loff_t offset, loff_t le
struct gfs2_holder gh;
int ret;
- if (mode & ~FALLOC_FL_KEEP_SIZE)
+ if (mode & ~(FALLOC_FL_PUNCH_HOLE | 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)
@@ -948,13 +948,18 @@ static long gfs2_fallocate(struct file *file, int mode, loff_t offset, loff_t le
if (ret)
goto out_unlock;
- ret = gfs2_rsqa_alloc(ip);
- if (ret)
- goto out_putw;
+ if (mode & FALLOC_FL_PUNCH_HOLE) {
+ ret = __gfs2_punch_hole(file, offset, len);
+ } else {
+ ret = gfs2_rsqa_alloc(ip);
+ if (ret)
+ goto out_putw;
- ret = __gfs2_fallocate(file, mode, offset, len);
- if (ret)
- gfs2_rs_deltree(&ip->i_res);
+ ret = __gfs2_fallocate(file, mode, offset, len);
+
+ if (ret)
+ gfs2_rs_deltree(&ip->i_res);
+ }
out_putw:
put_write_access(inode);