diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-11-29 10:21:43 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-11-29 10:47:20 -0800 |
commit | 45bce8f3e3436bbe2e03dd2b076abdce79ffabb7 (patch) | |
tree | 554d8cf7254eb58210e98f2a1053f531f68f024b /include/linux/textsearch.h | |
parent | 9489e9dcae718d5fde988e4a684a0f55b5f94d17 (diff) |
fs/buffer.c: make block-size be per-page and protected by the page lock
This makes the buffer size handling be a per-page thing, which allows us
to not have to worry about locking too much when changing the buffer
size. If a page doesn't have buffers, we still need to read the block
size from the inode, but we can do that with ACCESS_ONCE(), so that even
if the size is changing, we get a consistent value.
This doesn't convert all functions - many of the buffer functions are
used purely by filesystems, which in turn results in the buffer size
being fixed at mount-time. So they don't have the same consistency
issues that the raw device access can have.
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/textsearch.h')
0 files changed, 0 insertions, 0 deletions