Function report |
Source Code:include\linux\xarray.h |
Create Date:2022-07-28 05:42:17 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Name:xas_reset() - Reset an XArray operation state.*@xas: XArray operation state.* Resets the error or walk state of the @xas so future walks of the* array will start from the root. Use this if you have dropped the* xarray lock and want to reuse the xa_state.
Proto:static inline void xas_reset(struct xa_state *xas)
Type:void
Parameter:
Type | Parameter | Name |
---|---|---|
struct xa_state * | xas |
1467 | xa_node = XAS_RESTART |
Name | Describe |
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check_xas_retry | |
check_xa_mark_2 | |
find_get_entry | d_get_entry - find and get a page cache entry*@mapping: the address_space to search*@offset: the page cache index* Looks up the page cache slot at @mapping & @offset |
find_get_entries | d_get_entries - gang pagecache lookup*@mapping: The address_space to search*@start: The starting page cache index*@nr_entries: The maximum number of entries*@entries: Where the resulting entries are placed*@indices: The cache indices corresponding to the |
find_get_pages_range | d_get_pages_range - gang pagecache lookup*@mapping: The address_space to search*@start: The starting page index*@end: The final page index (inclusive)*@nr_pages: The maximum number of pages*@pages: Where the resulting pages are placed* |
find_get_pages_contig | d_get_pages_contig - gang contiguous pagecache lookup*@mapping: The address_space to search*@index: The starting page index*@nr_pages: The maximum number of pages*@pages: Where the resulting pages are placed* find_get_pages_contig() works exactly like |
find_get_pages_range_tag | d_get_pages_range_tag - find and return pages in given range matching @tag*@mapping: the address_space to search*@index: the starting page index*@end: The final page index (inclusive)*@tag: the tag index*@nr_pages: the maximum number of pages*@pages: |
get_unlocked_entry | Look up entry in page cache, wait for it to become unlocked if it* is a DAX entry and return it. The caller must subsequently call* put_unlocked_entry() if it did not lock the entry or dax_unlock_entry()* if it did |
dax_unlock_entry | We used the xa_state to get the entry, but then we locked the entry and* dropped the xa_lock, so we know the xa_state is stale and must be reset* before use. |
grab_mapping_entry | Find 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_entry | By 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 |
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