unlock_buffer

Name:unlock_buffer

Proto:void unlock_buffer(struct buffer_head *bh)

Type:void

Parameter:

Type	Parameter	Name
struct buffer_head *	bh

75

lear_bit_unlock - Clear a bit in memory, for unlock*@nr: the bit to set*@addr: the address to start counting from* This operation is atomic and provides release barrier semantics.

76

smp_mb__after_atomic()

77

wake_up_bit - wake up a waiter on a bit*@word: the word being waited on, a kernel virtual address*@bit: the bit of the word being waited on* There is a standard hashed waitqueue table for generic use

**Caller**
Name	Describe
__buffer_migrate_page
__end_buffer_read_notouch	End-of-IO handler helper function which does not touch the bh after* unlocking it
end_buffer_write_sync
end_buffer_async_read
end_buffer_async_write	Completion handler for block_write_full_page() - pages which are unlocked* during I/O, and which have PageWriteback cleared upon I/O completion.
__bread_slow
discard_buffer
__block_write_full_page	While block_write_full_page is writing back the dirty buffers under* the page lock, whoever dirtied the buffers may decide to clean them* again at any time
ll_rw_block	ll_rw_block: low-level access to block devices (DEPRECATED)@op: whether to %READ or %WRITE@op_flags: req_flag_bits@nr: number of &struct buffer_heads in the array@bhs: array of pointers to &struct buffer_head* ll_rw_block() takes an array of pointers
write_dirty_buffer
__sync_dirty_buffer	For a data-integrity writeout, we need to wait upon any in-progress I/O* and then start new I/O and then wait upon it. The caller must have a ref on* the buffer_head.
bh_uptodate_or_lock	h_uptodate_or_lock - Test whether the buffer is uptodate@bh: struct buffer_head Return true if the buffer is up-to-date and false,* with the buffer locked, if not.
bh_submit_read	h_submit_read - Submit a locked buffer for reading@bh: struct buffer_head Returns zero on success and -EIO on error.

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