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authorBob Peterson <rpeterso@redhat.com>2014-01-06 17:16:01 -0500
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-01-25 08:27:11 -0800
commit350f737ed039d2b36329ddcbcdf78e12c6d8c758 (patch)
treeda7fcf9dd5409232bd8950d5105ad7bc92cf70f3
parent6826621350ecf4ec5f3508aa9e853e60e766e221 (diff)
downloadlinaro-lsk-350f737ed039d2b36329ddcbcdf78e12c6d8c758.tar.gz
GFS2: Increase i_writecount during gfs2_setattr_chown
commit 62e96cf81988101fe9e086b2877307b6adda5197 upstream. This patch calls get_write_access in function gfs2_setattr_chown, which 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. It also ensures that a multi-block reservation exists when needed for quota change operations during the chown. Signed-off-by: Bob Peterson <rpeterso@redhat.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
-rw-r--r--fs/gfs2/inode.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index 62b484e4a9e..bc5dac40012 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -1536,10 +1536,22 @@ static int setattr_chown(struct inode *inode, struct iattr *attr)
if (!(attr->ia_valid & ATTR_GID) || gid_eq(ogid, ngid))
ogid = ngid = NO_GID_QUOTA_CHANGE;
- error = gfs2_quota_lock(ip, nuid, ngid);
+ error = get_write_access(inode);
if (error)
return error;
+ error = gfs2_rs_alloc(ip);
+ if (error)
+ goto out;
+
+ error = gfs2_rindex_update(sdp);
+ if (error)
+ goto out;
+
+ error = gfs2_quota_lock(ip, nuid, ngid);
+ if (error)
+ goto out;
+
if (!uid_eq(ouid, NO_UID_QUOTA_CHANGE) ||
!gid_eq(ogid, NO_GID_QUOTA_CHANGE)) {
error = gfs2_quota_check(ip, nuid, ngid);
@@ -1566,6 +1578,8 @@ out_end_trans:
gfs2_trans_end(sdp);
out_gunlock_q:
gfs2_quota_unlock(ip);
+out:
+ put_write_access(inode);
return error;
}