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| author | Matthew Wilcox <matthew.r.wilcox@intel.com> | 2011-05-12 19:51:41 +0200 |
|---|---|---|
| committer | Matthew Wilcox <matthew.r.wilcox@intel.com> | 2011-11-04 20:53:03 +0100 |
| commit | b77954cbddff28d55a36fad3c16f4daebb0f01df (patch) | |
| tree | 94f992d9c3390b61e11209f7b0e31440f67ec9c4 /ipc | |
| parent | NVMe: Use an IDA to allocate minor numbers (diff) | |
| download | linux-b77954cbddff28d55a36fad3c16f4daebb0f01df.tar.xz linux-b77954cbddff28d55a36fad3c16f4daebb0f01df.zip | |
NVMe: Handle failures from memory allocations in nvme_setup_prps
If any of the memory allocations in nvme_setup_prps fail, handle it by
modifying the passed-in data length to reflect the number of bytes we are
actually able to send. Also allow the caller to specify the GFP flags
they need; for user-initiated commands, we can use GFP_KERNEL allocations.
The various callers are updated to handle this possibility; the main
I/O path is already prepared for this possibility (as it may happen
due to nvme_map_bio being unable to map all the segments of the I/O).
The other callers return -ENOMEM instead of doing partial I/Os.
Reported-by: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com>
Diffstat (limited to 'ipc')
0 files changed, 0 insertions, 0 deletions