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mm/filemap: fold ra_submit into do_sync_mmap_readahead

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Fold ra_submit() into its last remaining user and pass the
readahead_control struct to both do_page_cache_ra() and
page_cache_sync_ra().

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/20200903140844.14194-9-willy@infradead.org
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
David Howells 2020-10-15 20:06:31 -07:00 • committed by Linus Torvalds
parent fefa7c478f
commit db660d4625
2 changed files with 5 additions and 15 deletions
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10
mm/filemap.c
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@ -2588,8 +2588,8 @@ static struct file *do_sync_mmap_readahead(struct vm_fault *vmf)
struct file *file = vmf->vma->vm_file;
struct file_ra_state *ra = &file->f_ra;
struct address_space *mapping = file->f_mapping;
DEFINE_READAHEAD(ractl, file, mapping, vmf->pgoff);
struct file *fpin = NULL;
pgoff_t offset = vmf->pgoff;
unsigned int mmap_miss;
/* If we don't want any read-ahead, don't bother */
@ -2600,8 +2600,7 @@ static struct file *do_sync_mmap_readahead(struct vm_fault *vmf)
if (vmf->vma->vm_flags & VM_SEQ_READ) {
fpin = maybe_unlock_mmap_for_io(vmf, fpin);
page_cache_sync_readahead(mapping, ra, file, offset,
ra->ra_pages);
page_cache_sync_ra(&ractl, ra, ra->ra_pages);
return fpin;
}
@ -2621,10 +2620,11 @@ static struct file *do_sync_mmap_readahead(struct vm_fault *vmf)
* mmap read-around
*/
fpin = maybe_unlock_mmap_for_io(vmf, fpin);
ra->start = max_t(long, 0, offset - ra->ra_pages / 2);
ra->start = max_t(long, 0, vmf->pgoff - ra->ra_pages / 2);
ra->size = ra->ra_pages;
ra->async_size = ra->ra_pages / 4;
ra_submit(ra, mapping, file);
ractl._index = ra->start;
do_page_cache_ra(&ractl, ra->size, ra->async_size);
return fpin;
}