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| author | Chris Wilson <[email protected]> | 2017-10-16 21:27:32 +0100 |
|---|---|---|
| committer | Rodrigo Vivi <[email protected]> | 2017-10-18 08:11:35 -0700 |
| commit | ca8d7822054287352c41ff38f656e68fef959732 (patch) | |
| tree | 6f99aeec9437799e9ecfc490cd43e806b2641db2 /lib/net_utils.c | |
| parent | 038daf5556a486cefc7a239ca4528003a5a4ef00 (diff) | |
drm/i915: Report -EFAULT before pwrite fast path into shmemfs
When pwriting into shmemfs, the fast path pagecache_write does not
notice when it is writing to beyond the end of the truncated shmemfs
inode. Report -EFAULT directly when we try to use pwrite into the
!I915_MADV_WILLNEED object.
Fixes: 7c55e2c5772d ("drm/i915: Use pagecache write to prepopulate shmemfs from pwrite-ioctl")
Testcase: igt/gem_madvise/dontneed-before-pwrite
Signed-off-by: Chris Wilson <[email protected]>
Cc: Matthew Auld <[email protected]>
Cc: Joonas Lahtinen <[email protected]>
Cc: Mika Kuoppala <[email protected]>
Reviewed-by: Joonas Lahtinen <[email protected]>
Link: https://patchwork.freedesktop.org/patch/msgid/[email protected]
(cherry picked from commit a6d65e451cc4e7127698384868a4447ee7be7d16)
Signed-off-by: Rodrigo Vivi <[email protected]>
Diffstat (limited to 'lib/net_utils.c')
0 files changed, 0 insertions, 0 deletions