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| author | Jaegeuk Kim | 2015-08-14 20:43:56 +0200 |
|---|---|---|
| committer | Jaegeuk Kim | 2015-08-20 18:00:09 +0200 |
| commit | 740432f835608d11b5386321ab5aa8f61e07fb27 (patch) | |
| tree | a732814d0ebbc706264ec4255ab1a6d006fb5dfe /fs/read_write.c | |
| parent | f2fs: increase the number of max hard links (diff) | |
| download | kernel-qcow2-linux-740432f835608d11b5386321ab5aa8f61e07fb27.tar.gz kernel-qcow2-linux-740432f835608d11b5386321ab5aa8f61e07fb27.tar.xz kernel-qcow2-linux-740432f835608d11b5386321ab5aa8f61e07fb27.zip | |
f2fs: handle failed bio allocation
As the below comment of bio_alloc_bioset, f2fs can allocate multiple bios at the
same time. So, we can't guarantee that bio is allocated all the time.
"
* When @bs is not NULL, if %__GFP_WAIT is set then bio_alloc will always be
* able to allocate a bio. This is due to the mempool guarantees. To make this
* work, callers must never allocate more than 1 bio at a time from this pool.
* Callers that need to allocate more than 1 bio must always submit the
* previously allocated bio for IO before attempting to allocate a new one.
* Failure to do so can cause deadlocks under memory pressure.
"
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/read_write.c')
0 files changed, 0 insertions, 0 deletions