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| author |   Josef Bacik <josef@toxicpanda.com> | 2019-05-13 17:21:04 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2019-05-14 09:47:49 -0700 |
| commit | cfcbfb1382dbac331d8aa92d3a218a16b803b2a9 (patch) | |
| tree | b82c7913d1790f823ed3f6ac5f39118a502571ea /mm | |
| parent | mm/mmu_notifier: mmu_notifier_range_update_to_read_only() helper (diff) | |
| download | linux-dev-cfcbfb1382dbac331d8aa92d3a218a16b803b2a9.tar.xz linux-dev-cfcbfb1382dbac331d8aa92d3a218a16b803b2a9.zip | |
mm/filemap.c: enable error injection at add_to_page_cache()
Recently I messed up the error handling in filemap_fault() because of an
unexpected ENOMEM (related to cgroup memory limits) in add_to_page_cache.
Enable error injection at this point so I can add a testcase to xfstests
to verify I don't mess this up again.
[akpm@linux-foundation.org: include linux/error-injection.h]
Link: http://lkml.kernel.org/r/20190403152604.14008-1-josef@toxicpanda.com
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: William Kucharski <william.kucharski@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/filemap.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/mm/filemap.c b/mm/filemap.c index 4157f858a9c6..0e929b4da48b 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -24,6 +24,7 @@ #include <linux/pagemap.h> #include <linux/file.h> #include <linux/uio.h> +#include <linux/error-injection.h> #include <linux/hash.h> #include <linux/writeback.h> #include <linux/backing-dev.h> @@ -882,6 +883,7 @@ error: put_page(page); return xas_error(&xas); } +ALLOW_ERROR_INJECTION(__add_to_page_cache_locked, ERRNO); /** * add_to_page_cache_locked - add a locked page to the pagecache |