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authorAl Viro <viro@zeniv.linux.org.uk>2015-04-09 20:52:01 +0300
committerAl Viro <viro@zeniv.linux.org.uk>2015-04-12 05:30:22 +0300
commit2ba48ce513c4e545318d22b138861d5876edf906 (patch)
tree0e2a5130ead5c71f0b079b1acd620fba98f99256 /fs
parent3309dd04cbcd2cdad168485af5cf3576b5051e49 (diff)
downloadlinux-2ba48ce513c4e545318d22b138861d5876edf906.tar.xz
mirror O_APPEND and O_DIRECT into iocb->ki_flags
... avoiding write_iter/fcntl races. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs')
-rw-r--r--fs/aio.c2
-rw-r--r--fs/btrfs/file.c2
-rw-r--r--fs/ceph/file.c8
-rw-r--r--fs/ext4/file.c4
-rw-r--r--fs/fuse/file.c2
-rw-r--r--fs/gfs2/file.c2
-rw-r--r--fs/nfs/file.c6
-rw-r--r--fs/ocfs2/file.c10
-rw-r--r--fs/xfs/xfs_file.c4
9 files changed, 20 insertions, 20 deletions
diff --git a/fs/aio.c b/fs/aio.c
index 5785c4b58fea..e976185c8e5b 100644
--- a/fs/aio.c
+++ b/fs/aio.c
@@ -1502,7 +1502,7 @@ static int io_submit_one(struct kioctx *ctx, struct iocb __user *user_iocb,
}
req->common.ki_pos = iocb->aio_offset;
req->common.ki_complete = aio_complete;
- req->common.ki_flags = 0;
+ req->common.ki_flags = iocb_flags(req->common.ki_filp);
if (iocb->aio_flags & IOCB_FLAG_RESFD) {
/*
diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c
index c64d11c41eeb..faa7d390841b 100644
--- a/fs/btrfs/file.c
+++ b/fs/btrfs/file.c
@@ -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);
diff --git a/fs/ceph/file.c b/fs/ceph/file.c
index 3f0b9339d823..b9b8eb225f66 100644
--- a/fs/ceph/file.c
+++ b/fs/ceph/file.c
@@ -457,7 +457,7 @@ static ssize_t ceph_sync_read(struct kiocb *iocb, struct iov_iter *i,
if (ret < 0)
return ret;
- if (file->f_flags & O_DIRECT) {
+ if (iocb->ki_flags & IOCB_DIRECT) {
while (iov_iter_count(i)) {
size_t start;
ssize_t n;
@@ -828,7 +828,7 @@ again:
return ret;
if ((got & (CEPH_CAP_FILE_CACHE|CEPH_CAP_FILE_LAZYIO)) == 0 ||
- (iocb->ki_filp->f_flags & O_DIRECT) ||
+ (iocb->ki_flags & IOCB_DIRECT) ||
(fi->flags & CEPH_F_SYNC)) {
dout("aio_sync_read %p %llx.%llx %llu~%u got cap refs on %s\n",
@@ -995,12 +995,12 @@ retry_snap:
inode, ceph_vinop(inode), pos, count, ceph_cap_string(got));
if ((got & (CEPH_CAP_FILE_BUFFER|CEPH_CAP_FILE_LAZYIO)) == 0 ||
- (file->f_flags & O_DIRECT) || (fi->flags & CEPH_F_SYNC)) {
+ (iocb->ki_flags & IOCB_DIRECT) || (fi->flags & CEPH_F_SYNC)) {
struct iov_iter data;
mutex_unlock(&inode->i_mutex);
/* we might need to revert back to that point */
data = *from;
- if (file->f_flags & O_DIRECT)
+ if (iocb->ki_flags & IOCB_DIRECT)
written = ceph_sync_direct_write(iocb, &data, pos);
else
written = ceph_sync_write(iocb, &data, pos);
diff --git a/fs/ext4/file.c b/fs/ext4/file.c
index c10785f10d1d..53bbc0b1995f 100644
--- a/fs/ext4/file.c
+++ b/fs/ext4/file.c
@@ -95,7 +95,7 @@ ext4_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
struct inode *inode = file_inode(iocb->ki_filp);
struct mutex *aio_mutex = NULL;
struct blk_plug plug;
- int o_direct = io_is_direct(file);
+ int o_direct = iocb->ki_flags & IOCB_DIRECT;
int overwrite = 0;
ssize_t ret;
@@ -106,7 +106,7 @@ ext4_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
if (o_direct &&
ext4_test_inode_flag(inode, EXT4_INODE_EXTENTS) &&
!is_sync_kiocb(iocb) &&
- (file->f_flags & O_APPEND ||
+ (iocb->ki_flags & IOCB_APPEND ||
ext4_unaligned_aio(inode, from, iocb->ki_pos))) {
aio_mutex = ext4_aio_mutex(inode);
mutex_lock(aio_mutex);
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index b86c8e08399a..5ef05b5c4cff 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -1177,7 +1177,7 @@ static ssize_t fuse_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
if (err)
goto out;
- if (file->f_flags & O_DIRECT) {
+ if (iocb->ki_flags & IOCB_DIRECT) {
loff_t pos = iocb->ki_pos;
written = generic_file_direct_write(iocb, from, pos);
if (written < 0 || !iov_iter_count(from))
diff --git a/fs/gfs2/file.c b/fs/gfs2/file.c
index 614bb42cb7e1..08329afa1339 100644
--- a/fs/gfs2/file.c
+++ b/fs/gfs2/file.c
@@ -709,7 +709,7 @@ static ssize_t gfs2_file_write_iter(struct kiocb *iocb, struct iov_iter *from)
gfs2_size_hint(file, iocb->ki_pos, iov_iter_count(from));
- if (file->f_flags & O_APPEND) {
+ if (iocb->ki_flags & IOCB_APPEND) {
struct gfs2_holder gh;
ret = gfs2_glock_nq_init(ip->i_gl, LM_ST_SHARED, 0, &gh);
diff --git a/fs/nfs/file.c b/fs/nfs/file.c
index f6a3adedf027..14364dc001f7 100644
--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -170,7 +170,7 @@ nfs_file_read(struct kiocb *iocb, struct iov_iter *to)
struct inode *inode = file_inode(iocb->ki_filp);
ssize_t result;
- if (iocb->ki_filp->f_flags & O_DIRECT)
+ if (iocb->ki_flags & IOCB_DIRECT)
return nfs_file_direct_read(iocb, to, iocb->ki_pos);
dprintk("NFS: read(%pD2, %zu@%lu)\n",
@@ -680,7 +680,7 @@ ssize_t nfs_file_write(struct kiocb *iocb, struct iov_iter *from)
if (result)
return result;
- if (file->f_flags & O_DIRECT)
+ if (iocb->ki_flags & IOCB_DIRECT)
return nfs_file_direct_write(iocb, from, pos);
dprintk("NFS: write(%pD2, %zu@%Ld)\n",
@@ -692,7 +692,7 @@ ssize_t nfs_file_write(struct kiocb *iocb, struct iov_iter *from)
/*
* O_APPEND implies that we must revalidate the file length.
*/
- if (file->f_flags & O_APPEND) {
+ if (iocb->ki_flags & IOCB_APPEND) {
result = nfs_revalidate_file_size(inode, file);
if (result)
goto out;
diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c
index b93919f50f0f..cd37f6cd4d51 100644
--- a/fs/ocfs2/file.c
+++ b/fs/ocfs2/file.c
@@ -2274,8 +2274,8 @@ static ssize_t ocfs2_file_write_iter(struct kiocb *iocb,
if (count == 0)
return 0;
- appending = file->f_flags & O_APPEND ? 1 : 0;
- direct_io = file->f_flags & O_DIRECT ? 1 : 0;
+ appending = iocb->ki_flags & IOCB_APPEND ? 1 : 0;
+ direct_io = iocb->ki_flags & IOCB_DIRECT ? 1 : 0;
mutex_lock(&inode->i_mutex);
@@ -2429,7 +2429,7 @@ relock:
out_dio:
/* buffered aio wouldn't have proper lock coverage today */
- BUG_ON(ret == -EIOCBQUEUED && !(file->f_flags & O_DIRECT));
+ BUG_ON(ret == -EIOCBQUEUED && !(iocb->ki_flags & IOCB_DIRECT));
if (unlikely(written <= 0))
goto no_sync;
@@ -2546,7 +2546,7 @@ static ssize_t ocfs2_file_read_iter(struct kiocb *iocb,
* buffered reads protect themselves in ->readpage(). O_DIRECT reads
* need locks to protect pending reads from racing with truncate.
*/
- if (filp->f_flags & O_DIRECT) {
+ if (iocb->ki_flags & IOCB_DIRECT) {
have_alloc_sem = 1;
ocfs2_iocb_set_sem_locked(iocb);
@@ -2580,7 +2580,7 @@ static ssize_t ocfs2_file_read_iter(struct kiocb *iocb,
trace_generic_file_aio_read_ret(ret);
/* buffered aio wouldn't have proper lock coverage today */
- BUG_ON(ret == -EIOCBQUEUED && !(filp->f_flags & O_DIRECT));
+ BUG_ON(ret == -EIOCBQUEUED && !(iocb->ki_flags & IOCB_DIRECT));
/* see ocfs2_file_write_iter */
if (ret == -EIOCBQUEUED || !ocfs2_iocb_is_rw_locked(iocb)) {
diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c
index 28d157807b42..1f12ad0a8585 100644
--- a/fs/xfs/xfs_file.c
+++ b/fs/xfs/xfs_file.c
@@ -279,7 +279,7 @@ xfs_file_read_iter(
XFS_STATS_INC(xs_read_calls);
- if (unlikely(file->f_flags & O_DIRECT))
+ if (unlikely(iocb->ki_flags & IOCB_DIRECT))
ioflags |= XFS_IO_ISDIRECT;
if (file->f_mode & FMODE_NOCMTIME)
ioflags |= XFS_IO_INVIS;
@@ -804,7 +804,7 @@ xfs_file_write_iter(
if (XFS_FORCED_SHUTDOWN(ip->i_mount))
return -EIO;
- if (unlikely(file->f_flags & O_DIRECT))
+ if (unlikely(iocb->ki_flags & IOCB_DIRECT))
ret = xfs_file_dio_aio_write(iocb, from);
else
ret = xfs_file_buffered_aio_write(iocb, from);