Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:include\linux\buffer_head.h Create Date:2022-07-28 12:16:49
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:lock_buffer

Proto:static inline void lock_buffer(struct buffer_head *bh)

Type:void

Parameter:

TypeParameterName
struct buffer_head *bh
364  might_sleep()
365  If Not trylock_buffer(bh) Then __lock_buffer(bh)
Caller
NameDescribe
buffer_migrate_lock_buffersReturns true if all buffers are successfully locked
__bread_slow
discard_buffer
__block_write_full_pageWhile 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
block_read_full_pageGeneric "read page" function for block devices that have the normal* get_block functionality
nobh_write_beginOn entry, the page is fully not uptodate.* On exit the page is fully uptodate in the areas outside (from,to)* The filesystem needs to handle block truncation upon failure.
write_dirty_buffer
__sync_dirty_bufferFor 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_lockh_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.