bufferhead: Add _gfp version for sb_getblk()

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commit bd7ade3cd9 upstream.

sb_getblk() is used during ext4 (and possibly other FSes) writeback
paths. Sometimes such path require allocating memory and guaranteeing
that such allocation won't block. Currently, however, there is no way
to provide user flags for sb_getblk which could lead to deadlocks.

This patch implements a sb_getblk_gfp with the only difference it can
accept user-provided GFP flags.

Signed-off-by: Nikolay Borisov <kernel@kyup.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Luis Henriques <luis.henriques@canonical.com>

...

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Nikolay Borisov 2015-07-02 01:32:44 -04:00 • committed by Luis Henriques

parent a68299adc7

commit cb1e4748f1

1 changed files with 7 additions and 0 deletions

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include/linux/buffer_head.h

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