Function report |
Source Code:fs\iomap\apply.c |
Create Date:2022-07-28 20:31:28 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Name:Execute a iomap write on a segment of the mapping that spans a* contiguous range of pages that have identical block mapping state
Proto:loff_t iomap_apply(struct inode *inode, loff_t pos, loff_t length, unsigned flags, const struct iomap_ops *ops, void *data, iomap_actor_t actor)
Type:loff_t
Parameter:
Type | Parameter | Name |
---|---|---|
struct inode * | inode | |
loff_t | pos | |
loff_t | length | |
unsigned | flags | |
const struct iomap_ops * | ops | |
void * | data | |
iomap_actor_t | actor |
27 | struct iomap iomap = { type of mapping = blocks allocated, need allocation } |
28 | struct iomap srcmap = { type of mapping = blocks allocated, need allocation } |
29 | written = 0 |
49 | If WARN_ON( file offset of mapping, bytes > pos) Then Return -EIO |
51 | If WARN_ON( length of mapping, bytes == 0) Then Return -EIO |
54 | trace_iomap_apply_dstmap(inode, & iomap) |
55 | If type of mapping != blocks allocated, need allocation Then trace_iomap_apply_srcmap(inode, & srcmap) |
80 | written = actor(inode, pos, length, data, & iomap, type of mapping != blocks allocated, need allocation ? & srcmap : & iomap) |
87 | If iomap_end Then |
Name | Describe |
---|---|
iomap_readpage | |
iomap_readpages | |
iomap_file_buffered_write | |
iomap_file_unshare | |
iomap_zero_range | |
iomap_page_mkwrite | |
iomap_dio_rw | map_dio_rw() always completes O_[D]SYNC writes regardless of whether the IO* is being issued as AIO or not. This allows us to optimise pure data writes* to use REQ_FUA rather than requiring generic_write_sync() to issue a* REQ_FLUSH post write |
iomap_fiemap | |
iomap_bmap | legacy ->bmap interface. 0 is the error return (!) |
iomap_seek_hole | |
iomap_seek_data | |
iomap_swapfile_activate | Iterate a swap file's iomaps to construct physical extents that can be* passed to the swapfile subsystem. |
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