MIRRORS/linux-yocto
1
0
Fork 0
mirror of git://git.yoctoproject.org/linux-yocto.git synced 2025-10-22 23:13:01 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

mm/filemap: use page_cache_sync_ra() to kick off read-ahead

Browse Source 
Rather than use the page_cache_sync_readahead() helper, define our own
ractl and use page_cache_sync_ra() directly.  In preparation for needing
to modify ractl inside filemap_get_pages().

No functional changes in this patch.

Link: https://lkml.kernel.org/r/20241220154831.1086649-3-axboe@kernel.dk
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Reviewed-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Brian Foster <bfoster@redhat.com>
Cc: Chris Mason <clm@meta.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Jens Axboe 2024-12-20 08:47:40 -07:00 committed by Andrew Morton
parent 9ad6344568
commit f598cdaafc
1 changed files with 3 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
mm/filemap.c
View File

@ -2499,7 +2499,6 @@ static int filemap_get_pages(struct kiocb *iocb, size_t count,
{
struct file *filp = iocb->ki_filp;
struct address_space *mapping = filp->f_mapping;
struct file_ra_state *ra = &filp->f_ra;
pgoff_t index = iocb->ki_pos >> PAGE_SHIFT;
pgoff_t last_index;
struct folio *folio;
@ -2514,12 +2513,13 @@ retry:
filemap_get_read_batch(mapping, index, last_index - 1, fbatch);
if (!folio_batch_count(fbatch)) {
DEFINE_READAHEAD(ractl, filp, &filp->f_ra, mapping, index);
if (iocb->ki_flags & IOCB_NOIO)
return -EAGAIN;
if (iocb->ki_flags & IOCB_NOWAIT)
flags = memalloc_noio_save();
page_cache_sync_readahead(mapping, ra, filp, index,
last_index - index);
page_cache_sync_ra(&ractl, last_index - index);
if (iocb->ki_flags & IOCB_NOWAIT)
memalloc_noio_restore(flags);
filemap_get_read_batch(mapping, index, last_index - 1, fbatch);