diff options
Diffstat (limited to 'fs/block_dev.c')
| -rw-r--r-- | fs/block_dev.c | 37 |
1 files changed, 17 insertions, 20 deletions
diff --git a/fs/block_dev.c b/fs/block_dev.c index b3171fb0dc9..50e8c8582fa 100644 --- a/fs/block_dev.c +++ b/fs/block_dev.c @@ -172,9 +172,8 @@ blkdev_direct_IO(int rw, struct kiocb *iocb, const struct iovec *iov, struct file *file = iocb->ki_filp; struct inode *inode = file->f_mapping->host; - return blockdev_direct_IO_no_locking_newtrunc(rw, iocb, inode, - I_BDEV(inode), iov, offset, nr_segs, - blkdev_get_blocks, NULL); + return __blockdev_direct_IO(rw, iocb, inode, I_BDEV(inode), iov, offset, + nr_segs, blkdev_get_blocks, NULL, NULL, 0); } int __sync_blockdev(struct block_device *bdev, int wait) @@ -309,9 +308,8 @@ static int blkdev_write_begin(struct file *file, struct address_space *mapping, loff_t pos, unsigned len, unsigned flags, struct page **pagep, void **fsdata) { - *pagep = NULL; - return block_write_begin_newtrunc(file, mapping, pos, len, flags, - pagep, fsdata, blkdev_get_block); + return block_write_begin(mapping, pos, len, flags, pagep, + blkdev_get_block); } static int blkdev_write_end(struct file *file, struct address_space *mapping, @@ -428,10 +426,13 @@ static inline void __bd_forget(struct inode *inode) inode->i_mapping = &inode->i_data; } -static void bdev_clear_inode(struct inode *inode) +static void bdev_evict_inode(struct inode *inode) { struct block_device *bdev = &BDEV_I(inode)->bdev; struct list_head *p; + truncate_inode_pages(&inode->i_data, 0); + invalidate_inode_buffers(inode); /* is it needed here? */ + end_writeback(inode); spin_lock(&bdev_lock); while ( (p = bdev->bd_inodes.next) != &bdev->bd_inodes ) { __bd_forget(list_entry(p, struct inode, i_devices)); @@ -445,7 +446,7 @@ static const struct super_operations bdev_sops = { .alloc_inode = bdev_alloc_inode, .destroy_inode = bdev_destroy_inode, .drop_inode = generic_delete_inode, - .clear_inode = bdev_clear_inode, + .evict_inode = bdev_evict_inode, }; static int bd_get_sb(struct file_system_type *fs_type, @@ -1339,19 +1340,20 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part) /* * hooks: /n/, see "layering violations". */ - ret = devcgroup_inode_permission(bdev->bd_inode, perm); - if (ret != 0) { - bdput(bdev); - return ret; + if (!for_part) { + ret = devcgroup_inode_permission(bdev->bd_inode, perm); + if (ret != 0) { + bdput(bdev); + return ret; + } } - lock_kernel(); restart: ret = -ENXIO; disk = get_gendisk(bdev->bd_dev, &partno); if (!disk) - goto out_unlock_kernel; + goto out; mutex_lock_nested(&bdev->bd_mutex, for_part); if (!bdev->bd_openers) { @@ -1431,7 +1433,6 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part) if (for_part) bdev->bd_part_count++; mutex_unlock(&bdev->bd_mutex); - unlock_kernel(); return 0; out_clear: @@ -1444,9 +1445,7 @@ static int __blkdev_get(struct block_device *bdev, fmode_t mode, int for_part) bdev->bd_contains = NULL; out_unlock_bdev: mutex_unlock(&bdev->bd_mutex); - out_unlock_kernel: - unlock_kernel(); - + out: if (disk) module_put(disk->fops->owner); put_disk(disk); @@ -1515,7 +1514,6 @@ static int __blkdev_put(struct block_device *bdev, fmode_t mode, int for_part) struct block_device *victim = NULL; mutex_lock_nested(&bdev->bd_mutex, for_part); - lock_kernel(); if (for_part) bdev->bd_part_count--; @@ -1540,7 +1538,6 @@ static int __blkdev_put(struct block_device *bdev, fmode_t mode, int for_part) victim = bdev->bd_contains; bdev->bd_contains = NULL; } - unlock_kernel(); mutex_unlock(&bdev->bd_mutex); bdput(bdev); if (victim) |