Function report |
Source Code:fs\buffer.c |
Create Date:2022-07-28 20:14:09 |
Last Modify:2020-03-18 10:38:29 | Copyright©Brick |
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Annotation kernel can get tool activity | Download SCCT | Chinese |
Name:__getblk_gfp() will locate (and, if necessary, create) the buffer_head* which corresponds to the passed block_device, block and size. The* returned buffer has its reference count incremented.* __getblk_gfp() will lock up the machine if grow_dev_page's
Proto:struct buffer_head *__getblk_gfp(struct block_device *bdev, sector_t block, unsigned size, gfp_t gfp)
Type:struct buffer_head
Parameter:
Type | Parameter | Name |
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struct block_device * | bdev | |
sector_t | block | |
unsigned | size | |
gfp_t | gfp |
1358 | bh = Perform a pagecache lookup for the matching buffer. If it's there, refresh* it in the LRU and mark it as accessed. If it is not present then return* NULL |
1360 | might_sleep() |
1363 | Return bh |
Name | Describe |
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__bread_gfp | __bread_gfp() - reads a specified block and returns the bh*@bdev: the block_device to read from*@block: number of block*@size: size (in bytes) to read*@gfp: page allocation flag* Reads a specified block, and returns buffer head that contains it |
Source code conversion tool public plug-in interface | X |
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