mirror of
https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
synced 2024-10-31 18:09:19 +00:00
lift sb_start_write/sb_end_write out of ->aio_write()
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
This commit is contained in:
parent
5f2e354f52
commit
8d71db4f08
11 changed files with 28 additions and 22 deletions
4
fs/aio.c
4
fs/aio.c
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@ -1324,6 +1324,8 @@ static ssize_t aio_rw_vect_retry(struct kiocb *iocb)
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if (iocb->ki_pos < 0)
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return -EINVAL;
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if (opcode == IOCB_CMD_PWRITEV)
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file_start_write(file);
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do {
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ret = rw_op(iocb, &iocb->ki_iovec[iocb->ki_cur_seg],
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iocb->ki_nr_segs - iocb->ki_cur_seg,
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@ -1336,6 +1338,8 @@ static ssize_t aio_rw_vect_retry(struct kiocb *iocb)
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} while (ret > 0 && iocb->ki_left > 0 &&
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(opcode == IOCB_CMD_PWRITEV ||
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(!S_ISFIFO(inode->i_mode) && !S_ISSOCK(inode->i_mode))));
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if (opcode == IOCB_CMD_PWRITEV)
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file_end_write(file);
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/* This means we must have transferred all that we could */
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/* No need to retry anymore */
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@ -1514,8 +1514,6 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb,
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size_t count, ocount;
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bool sync = (file->f_flags & O_DSYNC) || IS_SYNC(file->f_mapping->host);
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sb_start_write(inode->i_sb);
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mutex_lock(&inode->i_mutex);
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err = generic_segment_checks(iov, &nr_segs, &ocount, VERIFY_READ);
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@ -1617,7 +1615,6 @@ static ssize_t btrfs_file_aio_write(struct kiocb *iocb,
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if (sync)
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atomic_dec(&BTRFS_I(inode)->sync_writers);
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out:
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sb_end_write(inode->i_sb);
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current->backing_dev_info = NULL;
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return num_written ? num_written : err;
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}
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@ -2520,8 +2520,6 @@ cifs_writev(struct kiocb *iocb, const struct iovec *iov,
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BUG_ON(iocb->ki_pos != pos);
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sb_start_write(inode->i_sb);
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/*
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* We need to hold the sem to be sure nobody modifies lock list
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* with a brlock that prevents writing.
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@ -2545,7 +2543,6 @@ cifs_writev(struct kiocb *iocb, const struct iovec *iov,
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}
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up_read(&cinode->lock_sem);
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sb_end_write(inode->i_sb);
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return rc;
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}
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@ -1103,10 +1103,12 @@ static ssize_t compat_do_readv_writev(int type, struct file *file,
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fnv = file->f_op->aio_write;
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}
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if (fnv)
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if (fnv) {
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file_start_write(file);
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ret = do_sync_readv_writev(file, iov, nr_segs, tot_len,
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pos, fnv);
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else
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file_end_write(file);
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} else
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ret = do_loop_readv_writev(file, iov, nr_segs, pos, fn);
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out:
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@ -971,7 +971,6 @@ static ssize_t fuse_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
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return err;
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count = ocount;
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sb_start_write(inode->i_sb);
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mutex_lock(&inode->i_mutex);
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/* We can write back this queue in page reclaim */
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@ -1030,7 +1029,6 @@ static ssize_t fuse_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
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out:
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current->backing_dev_info = NULL;
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mutex_unlock(&inode->i_mutex);
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sb_end_write(inode->i_sb);
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return written ? written : err;
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}
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@ -2129,7 +2129,6 @@ static ssize_t ntfs_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
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BUG_ON(iocb->ki_pos != pos);
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sb_start_write(inode->i_sb);
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mutex_lock(&inode->i_mutex);
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ret = ntfs_file_aio_write_nolock(iocb, iov, nr_segs, &iocb->ki_pos);
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mutex_unlock(&inode->i_mutex);
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@ -2138,7 +2137,6 @@ static ssize_t ntfs_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
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if (err < 0)
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ret = err;
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}
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sb_end_write(inode->i_sb);
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return ret;
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}
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@ -2248,8 +2248,6 @@ static ssize_t ocfs2_file_aio_write(struct kiocb *iocb,
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if (iocb->ki_left == 0)
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return 0;
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sb_start_write(inode->i_sb);
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appending = file->f_flags & O_APPEND ? 1 : 0;
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direct_io = file->f_flags & O_DIRECT ? 1 : 0;
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@ -2423,7 +2421,6 @@ out_sems:
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ocfs2_iocb_clear_sem_locked(iocb);
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mutex_unlock(&inode->i_mutex);
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sb_end_write(inode->i_sb);
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if (written)
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ret = written;
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@ -398,6 +398,7 @@ ssize_t do_sync_write(struct file *filp, const char __user *buf, size_t len, lof
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struct kiocb kiocb;
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ssize_t ret;
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file_start_write(filp);
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init_sync_kiocb(&kiocb, filp);
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kiocb.ki_pos = *ppos;
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kiocb.ki_left = len;
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@ -413,6 +414,7 @@ ssize_t do_sync_write(struct file *filp, const char __user *buf, size_t len, lof
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if (-EIOCBQUEUED == ret)
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ret = wait_on_sync_kiocb(&kiocb);
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*ppos = kiocb.ki_pos;
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file_end_write(filp);
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return ret;
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}
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@ -758,10 +760,12 @@ static ssize_t do_readv_writev(int type, struct file *file,
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fnv = file->f_op->aio_write;
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}
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if (fnv)
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if (fnv) {
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file_start_write(file);
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ret = do_sync_readv_writev(file, iov, nr_segs, tot_len,
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pos, fnv);
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else
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file_end_write(file);
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} else
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ret = do_loop_readv_writev(file, iov, nr_segs, pos, fn);
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out:
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@ -775,8 +775,6 @@ xfs_file_aio_write(
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if (ocount == 0)
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return 0;
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sb_start_write(inode->i_sb);
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if (XFS_FORCED_SHUTDOWN(ip->i_mount)) {
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ret = -EIO;
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goto out;
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@ -800,7 +798,6 @@ xfs_file_aio_write(
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}
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out:
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sb_end_write(inode->i_sb);
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return ret;
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}
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@ -2223,6 +2223,20 @@ static inline struct inode *file_inode(struct file *f)
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return f->f_inode;
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}
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static inline void file_start_write(struct file *file)
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{
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if (!S_ISREG(file_inode(file)->i_mode))
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return;
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__sb_start_write(file_inode(file)->i_sb, SB_FREEZE_WRITE, true);
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}
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static inline void file_end_write(struct file *file)
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{
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if (!S_ISREG(file_inode(file)->i_mode))
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return;
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__sb_end_write(file_inode(file)->i_sb, SB_FREEZE_WRITE);
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}
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/*
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* get_write_access() gets write permission for a file.
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* put_write_access() releases this write permission.
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@ -2528,7 +2528,6 @@ ssize_t generic_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
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BUG_ON(iocb->ki_pos != pos);
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sb_start_write(inode->i_sb);
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mutex_lock(&inode->i_mutex);
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ret = __generic_file_aio_write(iocb, iov, nr_segs, &iocb->ki_pos);
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mutex_unlock(&inode->i_mutex);
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@ -2540,7 +2539,6 @@ ssize_t generic_file_aio_write(struct kiocb *iocb, const struct iovec *iov,
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if (err < 0 && ret > 0)
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ret = err;
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}
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sb_end_write(inode->i_sb);
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return ret;
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}
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EXPORT_SYMBOL(generic_file_aio_write);
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