]> git.proxmox.com Git - mirror_ubuntu-kernels.git/commit
btrfs: check io_ctl_prepare_pages return in __btrfs_write_out_cache
authorOmar Sandoval <osandov@osandov.com>
Tue, 24 Feb 2015 10:47:06 +0000 (02:47 -0800)
committerChris Mason <clm@fb.com>
Sun, 26 Apr 2015 13:27:01 +0000 (06:27 -0700)
commitb86054540e4ad7d8df67f3a80658d037a2ce1c02
treebd2135e03872c758cb1f543e1f02e40f71fcdd16
parent5ca64f45e92dc52bd3bc1ad93f4f9e5a57955f28
btrfs: check io_ctl_prepare_pages return in __btrfs_write_out_cache

If io_ctl_prepare_pages fails, the pages in io_ctl.pages are not valid.
When we try to access them later, things will blow up in various ways.

Also fix the comment about the return value, which is an errno on error,
not -1, and update the cases where it was not.

Reviewed-by: Liu Bo <bo.li.liu@oracle.com>
Signed-off-by: Omar Sandoval <osandov@osandov.com>
Signed-off-by: Chris Mason <clm@fb.com>
fs/btrfs/free-space-cache.c