From 620c66ab00f5b06de7119fbe0cc7dba3cc9aca7d Mon Sep 17 00:00:00 2001 From: Eric Sandeen Date: Fri, 2 Oct 2009 21:20:55 -0400 Subject: [PATCH] ext4: retry failed direct IO allocations (cherry picked from commit fbbf69456619de5d251cb9f1df609069178c62d5) On a 256M filesystem, doing this in a loop: xfs_io -F -f -d -c 'pwrite 0 64m' test rm -f test eventually leads to ENOSPC. (the xfs_io command does a 64m direct IO write to the file "test") As with other block allocation callers, it looks like we need to potentially retry the allocations on the initial ENOSPC. Signed-off-by: Eric Sandeen Signed-off-by: "Theodore Ts'o" Signed-off-by: Greg Kroah-Hartman --- fs/ext4/inode.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index aac46d0000af0..6c8411bb05139 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -3372,6 +3372,7 @@ static ssize_t ext4_ind_direct_IO(int rw, struct kiocb *iocb, ssize_t ret; int orphan = 0; size_t count = iov_length(iov, nr_segs); + int retries = 0; if (rw == WRITE) { loff_t final_size = offset + count; @@ -3394,9 +3395,12 @@ static ssize_t ext4_ind_direct_IO(int rw, struct kiocb *iocb, } } +retry: ret = blockdev_direct_IO(rw, iocb, inode, inode->i_sb->s_bdev, iov, offset, nr_segs, ext4_get_block, NULL); + if (ret == -ENOSPC && ext4_should_retry_alloc(inode->i_sb, &retries)) + goto retry; if (orphan) { int err; -- 2.47.2