From 8d71db4f0890605d44815a2b2da4ca003f1bb142 Mon Sep 17 00:00:00 2001 From: Al Viro Date: Tue, 19 Mar 2013 21:01:03 -0400 Subject: [PATCH] lift sb_start_write/sb_end_write out of ->aio_write() Signed-off-by: Al Viro --- fs/aio.c | 4 ++++ fs/btrfs/file.c | 3 --- fs/cifs/file.c | 3 --- fs/compat.c | 6 ++++-- fs/fuse/file.c | 2 -- fs/ntfs/file.c | 2 -- fs/ocfs2/file.c | 3 --- fs/read_write.c | 8 ++++++-- fs/xfs/xfs_file.c | 3 --- include/linux/fs.h | 14 ++++++++++++++ mm/filemap.c | 2 -- 11 files changed, 28 insertions(+), 22 deletions(-) diff --git a/fs/aio.c b/fs/aio.c index 3f941f2a3059..4ec28f13a92e 100644 --- a/fs/aio.c +++ b/fs/aio.c @@ -1324,6 +1324,8 @@ static ssize_t aio_rw_vect_retry(struct kiocb *iocb) if (iocb->ki_pos < 0) return -EINVAL; + if (opcode == IOCB_CMD_PWRITEV) + file_start_write(file); do { ret = rw_op(iocb, &iocb->ki_iovec[iocb->ki_cur_seg], iocb->ki_nr_segs - iocb->ki_cur_seg, @@ -1336,6 +1338,8 @@ static ssize_t aio_rw_vect_retry(struct kiocb *iocb) } while (ret > 0 && iocb->ki_left > 0 && (opcode == IOCB_CMD_PWRITEV || (!S_ISFIFO(inode->i_mode) && !S_ISSOCK(inode->i_mode)))); + if (opcode == IOCB_CMD_PWRITEV) + file_end_write(file); /* This means we must have transferred all that we could */ /* No need to retry anymore */ diff --git a/fs/btrfs/file.c b/fs/btrfs/file.c index 5b4ea5f55b8f..254aeb72915f 100644 --- a/fs/btrfs/file.c +++ b/fs/btrfs/file.c @@ -1514,8 +1514,6 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb, size_t count, ocount; bool sync = (file->f_flags & O_DSYNC) || IS_SYNC(file->f_mapping->host); - sb_start_write(inode->i_sb); - mutex_lock(&inode->i_mutex); err = generic_segment_checks(iov, &nr_segs, &ocount, VERIFY_READ); @@ -1617,7 +1615,6 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb, if (sync) atomic_dec(&BTRFS_I(inode)->sync_writers); out: - sb_end_write(inode->i_sb); current->backing_dev_info = NULL; return num_written ? num_written : err; } diff --git a/fs/cifs/file.c b/fs/cifs/file.c index 7a0dd99e4507..2d4a231dd70b 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -2520,8 +2520,6 @@ cifs_writev(struct kiocb *iocb, const struct iovec *iov, BUG_ON(iocb->ki_pos != pos); - sb_start_write(inode->i_sb); - /* * We need to hold the sem to be sure nobody modifies lock list * with a brlock that prevents writing. @@ -2545,7 +2543,6 @@ cifs_writev(struct kiocb *iocb, const struct iovec *iov, } up_read(&cinode->lock_sem); - sb_end_write(inode->i_sb); return rc; } diff --git a/fs/compat.c b/fs/compat.c index d487985dd0ea..daa3b771d64d 100644 --- a/fs/compat.c +++ b/fs/compat.c @@ -1103,10 +1103,12 @@ static ssize_t compat_do_readv_writev(int type, struct file *file, fnv = file->f_op->aio_write; } - if (fnv) + if (fnv) { + file_start_write(file); ret = do_sync_readv_writev(file, iov, nr_segs, tot_len, pos, fnv); - else + file_end_write(file); + } else ret = do_loop_readv_writev(file, iov, nr_segs, pos, fn); out: diff --git a/fs/fuse/file.c b/fs/fuse/file.c index 34b80ba95bad..d15c6f21c17f 100644 --- a/fs/fuse/file.c +++ b/fs/fuse/file.c @@ -971,7 +971,6 @@ static ssize_t fuse_file_aio_write(struct kiocb *iocb, const struct iovec *iov, return err; count = ocount; - sb_start_write(inode->i_sb); mutex_lock(&inode->i_mutex); /* We can write back this queue in page reclaim */ @@ -1030,7 +1029,6 @@ static ssize_t fuse_file_aio_write(struct kiocb *iocb, const struct iovec *iov, out: current->backing_dev_info = NULL; mutex_unlock(&inode->i_mutex); - sb_end_write(inode->i_sb); return written ? written : err; } diff --git a/fs/ntfs/file.c b/fs/ntfs/file.c index 5b2d4f0853ac..1da4b81e6f76 100644 --- a/fs/ntfs/file.c +++ b/fs/ntfs/file.c @@ -2129,7 +2129,6 @@ static ssize_t ntfs_file_aio_write(struct kiocb *iocb, const struct iovec *iov, BUG_ON(iocb->ki_pos != pos); - sb_start_write(inode->i_sb); mutex_lock(&inode->i_mutex); ret = ntfs_file_aio_write_nolock(iocb, iov, nr_segs, &iocb->ki_pos); mutex_unlock(&inode->i_mutex); @@ -2138,7 +2137,6 @@ static ssize_t ntfs_file_aio_write(struct kiocb *iocb, const struct iovec *iov, if (err < 0) ret = err; } - sb_end_write(inode->i_sb); return ret; } diff --git a/fs/ocfs2/file.c b/fs/ocfs2/file.c index 6474cb44004d..1c93e771e950 100644 --- a/fs/ocfs2/file.c +++ b/fs/ocfs2/file.c @@ -2248,8 +2248,6 @@ static ssize_t ocfs2_file_aio_write(struct kiocb *iocb, if (iocb->ki_left == 0) return 0; - sb_start_write(inode->i_sb); - appending = file->f_flags & O_APPEND ? 1 : 0; direct_io = file->f_flags & O_DIRECT ? 1 : 0; @@ -2423,7 +2421,6 @@ static ssize_t ocfs2_file_aio_write(struct kiocb *iocb, ocfs2_iocb_clear_sem_locked(iocb); mutex_unlock(&inode->i_mutex); - sb_end_write(inode->i_sb); if (written) ret = written; diff --git a/fs/read_write.c b/fs/read_write.c index f7b5a23b804b..3e1791a2cfd6 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -398,6 +398,7 @@ ssize_t do_sync_write(struct file *filp, const char __user *buf, size_t len, lof struct kiocb kiocb; ssize_t ret; + file_start_write(filp); init_sync_kiocb(&kiocb, filp); kiocb.ki_pos = *ppos; kiocb.ki_left = len; @@ -413,6 +414,7 @@ ssize_t do_sync_write(struct file *filp, const char __user *buf, size_t len, lof if (-EIOCBQUEUED == ret) ret = wait_on_sync_kiocb(&kiocb); *ppos = kiocb.ki_pos; + file_end_write(filp); return ret; } @@ -758,10 +760,12 @@ static ssize_t do_readv_writev(int type, struct file *file, fnv = file->f_op->aio_write; } - if (fnv) + if (fnv) { + file_start_write(file); ret = do_sync_readv_writev(file, iov, nr_segs, tot_len, pos, fnv); - else + file_end_write(file); + } else ret = do_loop_readv_writev(file, iov, nr_segs, pos, fn); out: diff --git a/fs/xfs/xfs_file.c b/fs/xfs/xfs_file.c index f03bf1a456fb..3800128d2171 100644 --- a/fs/xfs/xfs_file.c +++ b/fs/xfs/xfs_file.c @@ -775,8 +775,6 @@ xfs_file_aio_write( if (ocount == 0) return 0; - sb_start_write(inode->i_sb); - if (XFS_FORCED_SHUTDOWN(ip->i_mount)) { ret = -EIO; goto out; @@ -800,7 +798,6 @@ xfs_file_aio_write( } out: - sb_end_write(inode->i_sb); return ret; } diff --git a/include/linux/fs.h b/include/linux/fs.h index 2c28271ab9d4..578a66e6ee72 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -2223,6 +2223,20 @@ static inline struct inode *file_inode(struct file *f) return f->f_inode; } +static inline void file_start_write(struct file *file) +{ + if (!S_ISREG(file_inode(file)->i_mode)) + return; + __sb_start_write(file_inode(file)->i_sb, SB_FREEZE_WRITE, true); +} + +static inline void file_end_write(struct file *file) +{ + if (!S_ISREG(file_inode(file)->i_mode)) + return; + __sb_end_write(file_inode(file)->i_sb, SB_FREEZE_WRITE); +} + /* * get_write_access() gets write permission for a file. * put_write_access() releases this write permission. diff --git a/mm/filemap.c b/mm/filemap.c index e1979fdca805..cbde8842a374 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -2528,7 +2528,6 @@ ssize_t generic_file_aio_write(struct kiocb *iocb, const struct iovec *iov, BUG_ON(iocb->ki_pos != pos); - sb_start_write(inode->i_sb); mutex_lock(&inode->i_mutex); ret = __generic_file_aio_write(iocb, iov, nr_segs, &iocb->ki_pos); mutex_unlock(&inode->i_mutex); @@ -2540,7 +2539,6 @@ ssize_t generic_file_aio_write(struct kiocb *iocb, const struct iovec *iov, if (err < 0 && ret > 0) ret = err; } - sb_end_write(inode->i_sb); return ret; } EXPORT_SYMBOL(generic_file_aio_write); -- GitLab