From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jaegeuk Kim Subject: [PATCH 1/2] f2fs: retry ENOMEM for quota_read|write Date: Thu, 19 Oct 2017 09:56:16 -0700 Message-ID: <20171019165617.79128-1-jaegeuk@kernel.org> Return-path: Sender: linux-kernel-owner@vger.kernel.org To: linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net Cc: Jaegeuk Kim List-Id: linux-f2fs-devel.lists.sourceforge.net This gives another chance to read or write quota data. Signed-off-by: Jaegeuk Kim --- fs/f2fs/super.c | 13 +++++++++++-- 1 file changed, 11 insertions(+), 2 deletions(-) diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c index fc3b74e53670..2c6e9adce464 100644 --- a/fs/f2fs/super.c +++ b/fs/f2fs/super.c @@ -1351,8 +1351,13 @@ static ssize_t f2fs_quota_read(struct super_block *sb, int type, char *data, tocopy = min_t(unsigned long, sb->s_blocksize - offset, toread); repeat: page = read_mapping_page(mapping, blkidx, NULL); - if (IS_ERR(page)) + if (IS_ERR(page)) { + if (PTR_ERR(page) == -ENOMEM) { + congestion_wait(BLK_RW_ASYNC, HZ/50); + goto repeat; + } return PTR_ERR(page); + } lock_page(page); @@ -1395,10 +1400,14 @@ static ssize_t f2fs_quota_write(struct super_block *sb, int type, while (towrite > 0) { tocopy = min_t(unsigned long, sb->s_blocksize - offset, towrite); - +retry: err = a_ops->write_begin(NULL, mapping, off, tocopy, 0, &page, NULL); if (unlikely(err)) { + if (err == -ENOMEM) { + congestion_wait(BLK_RW_ASYNC, HZ/50); + goto retry; + } if (len == towrite) return err; break; -- 2.14.0.rc1.383.gd1ce394fe2-goog