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mirror O_APPEND and O_DIRECT into iocb->ki_flags

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... avoiding write_iter/fcntl races.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
Al Viro
2015-04-09 13:52:01 -04:00
parent 3309dd04cb
commit 2ba48ce513
11 changed files with 38 additions and 23 deletions
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2
fs/btrfs/file.c
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@@ -1794,7 +1794,7 @@ static ssize_t btrfs_file_write_iter(struct kiocb *iocb,
if (sync)
atomic_inc(&BTRFS_I(inode)->sync_writers);
if (file->f_flags & O_DIRECT) {
if (iocb->ki_flags & IOCB_DIRECT) {
num_written = __btrfs_direct_write(iocb, from, pos);
} else {
num_written = __btrfs_buffered_write(file, from, pos);