fscrypt: document gfp_flags for bounce page allocation
authorEric Biggers <ebiggers@google.com>
Tue, 31 Dec 2019 18:10:26 +0000 (12:10 -0600)
committerEric Biggers <ebiggers@google.com>
Tue, 14 Jan 2020 20:51:12 +0000 (12:51 -0800)
commit2d8f7f119b0b2ce5e7ff0e8024b0763bf42b99c9
treef08d5430b86b860cc5c4020de52ba7ed21e25c0d
parent796f12d742653028a1520cce3a76035c86e2ebf9
fscrypt: document gfp_flags for bounce page allocation

Document that fscrypt_encrypt_pagecache_blocks() allocates the bounce
page from a mempool, and document what this means for the @gfp_flags
argument.

Link: https://lore.kernel.org/r/20191231181026.47400-1-ebiggers@kernel.org
Reviewed-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Eric Biggers <ebiggers@google.com>
fs/crypto/crypto.c