Function report

Linux Kernel

v5.5.9

Brick Technologies Co., Ltd

Source Code:fs\dax.c Create Date:2022-07-28 20:23:10
Last Modify:2020-03-12 14:18:49 Copyright©Brick
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Annotation kernel can get tool activityDownload SCCTChinese

Name:dax_is_zero_entry

Proto:static int dax_is_zero_entry(void *entry)

Type:int

Parameter:

TypeParameterName
void *entry
117  Return xa_to_value() - Get value stored in an XArray entry.*@entry: XArray entry.* Context: Any context.* Return: The value stored in the XArray entry. & DAX_ZERO_PAGE
Caller
NameDescribe
dax_entry_size
grab_mapping_entryFind page cache entry at given index. If it is a DAX entry, return it* with the entry locked. If the page cache doesn't contain an entry at* that index, add a locked empty entry.* When requesting an entry with size DAX_PMD, grab_mapping_entry() will
dax_insert_entryBy this point grab_mapping_entry() has ensured that we have a locked entry* of the appropriate size so we don't have to worry about downgrading PMDs to* PTEs
dax_writeback_one