Commit ca0dbd86 authored by Thadeu Lima de Souza Cascardo's avatar Thadeu Lima de Souza Cascardo Committed by Jiri Kosina

doc: inode uses a mutex instead of a semaphore.

Replace the introduced i_sem by an i_mutex in the filesystem locking
documentation. This was introduced [1] after all occurrences were
already replaced in the same text [2]. However, the term "inode
semaphore" has not been replaced then, and it's replaced now.

[1] afddba49
[2] a7bc02f4Signed-off-by: default avatarThadeu Lima de Souza Cascardo <cascardo@holoscopio.com>
Cc: Nick Piggin <npiggin@suse.de>
Cc: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Cc: Randy Dunlap <rdunlap@xenotime.net>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
parent ce60d4d5
......@@ -178,7 +178,7 @@ prototypes:
locking rules:
All except set_page_dirty may block
BKL PageLocked(page) i_sem
BKL PageLocked(page) i_mutex
writepage: no yes, unlocks (see below)
readpage: no yes, unlocks
sync_page: no maybe
......@@ -429,7 +429,7 @@ check_flags: no
implementations. If your fs is not using generic_file_llseek, you
need to acquire and release the appropriate locks in your ->llseek().
For many filesystems, it is probably safe to acquire the inode
semaphore. Note some filesystems (i.e. remote ones) provide no
mutex. Note some filesystems (i.e. remote ones) provide no
protection for i_size so you will need to use the BKL.
Note: ext2_release() was *the* source of contention on fs-intensive
......
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