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buffer: have alloc_page_buffers() use __GFP_NOFAIL

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Instead of adding weird retry logic in that function, utilize
__GFP_NOFAIL to ensure that the vm takes care of handling any
potential retries appropriately. This means we don't have to
call free_more_memory() from here.

Reviewed-by: Nikolay Borisov <[email protected]>
Reviewed-by: Jan Kara <[email protected]>
Signed-off-by: Jens Axboe <[email protected]>
This commit is contained in:
Jens Axboe 2017-09-27 05:40:16 -06:00
commit 640ab98fb3
5 changed files with 14 additions and 27 deletions
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2
fs/ntfs/aops.c
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@ -1739,7 +1739,7 @@ void mark_ntfs_record_dirty(struct page *page, const unsigned int ofs) {
spin_lock(&mapping->private_lock);
if (unlikely(!page_has_buffers(page))) {
spin_unlock(&mapping->private_lock);
bh = head = alloc_page_buffers(page, bh_size, 1);
bh = head = alloc_page_buffers(page, bh_size, true);
spin_lock(&mapping->private_lock);
if (likely(!page_has_buffers(page))) {
struct buffer_head *tail;

2
fs/ntfs/mft.c
View file

@ -507,7 +507,7 @@ int ntfs_sync_mft_mirror(ntfs_volume *vol, const unsigned long mft_no,
if (unlikely(!page_has_buffers(page))) {
struct buffer_head *tail;
bh = head = alloc_page_buffers(page, blocksize, 1);
bh = head = alloc_page_buffers(page, blocksize, true);
do {
set_buffer_uptodate(bh);
tail = bh;