diff options
| author | David Howells <dhowells@redhat.com> | 2020-10-15 20:06:35 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-16 11:11:16 -0700 |
| commit | b1647dc0deef6e923e30c46f28bf5679125c9a10 (patch) | |
| tree | 53734204747a75887253093b6784f8f662c32cef | |
| parent | db660d462525c4a152b25e033c3dfa9c25d188e6 (diff) | |
mm/readahead: pass a file_ra_state into force_page_cache_ra
The file_ra_state being passed into page_cache_sync_readahead() was being
ignored in favour of using the one embedded in the struct file. The only
caller for which this makes a difference is the fsverity code if the file
has been marked as POSIX_FADV_RANDOM, but it's confusing and worth fixing.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Eric Biggers <ebiggers@google.com>
Link: https://lkml.kernel.org/r/20200903140844.14194-10-willy@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/internal.h | 5 | ||||
| -rw-r--r-- | mm/readahead.c | 5 |
2 files changed, 5 insertions, 5 deletions
diff --git a/mm/internal.h b/mm/internal.h index 03654797a3a9..6345b08ce86c 100644 --- a/mm/internal.h +++ b/mm/internal.h @@ -51,12 +51,13 @@ void unmap_page_range(struct mmu_gather *tlb, void do_page_cache_ra(struct readahead_control *, unsigned long nr_to_read, unsigned long lookahead_size); -void force_page_cache_ra(struct readahead_control *, unsigned long nr); +void force_page_cache_ra(struct readahead_control *, struct file_ra_state *, + unsigned long nr); static inline void force_page_cache_readahead(struct address_space *mapping, struct file *file, pgoff_t index, unsigned long nr_to_read) { DEFINE_READAHEAD(ractl, file, mapping, index); - force_page_cache_ra(&ractl, nr_to_read); + force_page_cache_ra(&ractl, &file->f_ra, nr_to_read); } struct page *find_get_entry(struct address_space *mapping, pgoff_t index); diff --git a/mm/readahead.c b/mm/readahead.c index 620ac83f35cc..c6ffb76827da 100644 --- a/mm/readahead.c +++ b/mm/readahead.c @@ -272,11 +272,10 @@ void do_page_cache_ra(struct readahead_control *ractl, * memory at once. */ void force_page_cache_ra(struct readahead_control *ractl, - unsigned long nr_to_read) + struct file_ra_state *ra, unsigned long nr_to_read) { struct address_space *mapping = ractl->mapping; struct backing_dev_info *bdi = inode_to_bdi(mapping->host); - struct file_ra_state *ra = &ractl->file->f_ra; unsigned long max_pages, index; if (unlikely(!mapping->a_ops->readpage && !mapping->a_ops->readpages && @@ -562,7 +561,7 @@ void page_cache_sync_ra(struct readahead_control *ractl, /* be dumb */ if (ractl->file && (ractl->file->f_mode & FMODE_RANDOM)) { - force_page_cache_ra(ractl, req_count); + force_page_cache_ra(ractl, ra, req_count); return; } |