BMC/Intel-BMC/linux.git/fs/ceph/file.c, branch v4.9

ceph: use default file splice read callback

2016-11-10T19:13:04+00:00

Splice read/write implementation changed recently. When using generic_file_splice_read(), iov_iter with type == ITER_PIPE is passed to filesystem's read_iter callback. But ceph_sync_read() can't serve ITER_PIPE iov_iter correctly (ITER_PIPE iov_iter expects pages from page cache). Fixing ceph_sync_read() requires a big patch. So use default splice read callback for now. Signed-off-by: Yan, Zheng Signed-off-by: Ilya Dryomov

ceph: fix error handling in ceph_read_iter

2016-10-15T21:28:07+00:00

In case __ceph_do_getattr returns an error and the retry_op in ceph_read_iter is not READ_INLINE, then it's possible to invoke __free_page on a page which is NULL, this naturally leads to a crash. This can happen when, for example, a process waiting on a MDS reply receives sigterm. Fix this by explicitly checking whether the page is set or not. Cc: stable@vger.kernel.org # 3.19+ Signed-off-by: Nikolay Borisov Reviewed-by: Yan, Zheng Signed-off-by: Ilya Dryomov

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2016-10-11T03:16:43+00:00

Pull more vfs updates from Al Viro: ">rename2() work from Miklos + current_time() from Deepa" * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: fs: Replace current_fs_time() with current_time() fs: Replace CURRENT_TIME_SEC with current_time() for inode timestamps fs: Replace CURRENT_TIME with current_time() for inode timestamps fs: proc: Delete inode time initializations in proc_alloc_inode() vfs: Add current_time() api vfs: add note about i_op->rename changes to porting fs: rename "rename2" i_op to "rename" vfs: remove unused i_op->rename fs: make remaining filesystems use .rename2 libfs: support RENAME_NOREPLACE in simple_rename() fs: support RENAME_NOREPLACE for local filesystems ncpfs: fix unused variable warning

ceph: ignore error from invalidate_inode_pages2_range() in direct write

2016-10-03T14:13:49+00:00

This call can fail if there are dirty pages. The preceding call to filemap_write_and_wait_range() will normally remove dirty pages, but as inode_lock() is not held over calls to ceph_direct_read_write(), it could race with non-direct writes and pages could be dirtied immediately after filemap_write_and_wait_range() returns If there are dirty pages, they will be removed by the subsequent call to truncate_inode_pages_range(), so having them here is not a problem. If the 'ret' value is left holding an error, then in the async IO case (aio_req is not NULL) the loop that would normally call ceph_osdc_start_request() will see the error in 'ret' and abort all requests. This doesn't seem like correct behaviour. So use separate 'ret2' instead of overloading 'ret'. Signed-off-by: NeilBrown Reviewed-by: Jeff Layton Reviewed-by: Yan, Zheng

fs: Replace current_fs_time() with current_time()

2016-09-28T01:06:22+00:00

current_fs_time() uses struct super_block* as an argument. As per Linus's suggestion, this is changed to take struct inode* as a parameter instead. This is because the function is primarily meant for vfs inode timestamps. Also the function was renamed as per Arnd's suggestion. Change all calls to current_fs_time() to use the new current_time() function instead. current_fs_time() will be deleted. Signed-off-by: Deepa Dinamani Signed-off-by: Al Viro

ceph: Correctly return NXIO errors from ceph_llseek

2016-07-28T01:00:45+00:00

ceph_llseek does not correctly return NXIO errors because the 'out' path always returns 'offset'. Fixes: 06222e491e66 ("fs: handle SEEK_HOLE/SEEK_DATA properly in all fs's that define their own llseek") Signed-off-by: Phil Turnbull Signed-off-by: Yan, Zheng

ceph: wait unsafe sync writes for evicting inode

2016-07-28T00:55:40+00:00

Otherwise ceph_sync_write_unsafe() may access/modify freed inode. Signed-off-by: Yan, Zheng

ceph: fix use-after-free bug in ceph_direct_read_write()

2016-07-28T00:55:39+00:00

ceph_aio_complete() can free the ceph_aio_request struct before the code exits the while loop. Signed-off-by: Yan, Zheng

ceph: set user pages dirty after direct IO read

2016-07-28T00:55:38+00:00

Signed-off-by: Yan, Zheng

libceph: define new ceph_file_layout structure

2016-07-28T00:55:36+00:00

Define new ceph_file_layout structure and rename old ceph_file_layout to ceph_file_layout_legacy. This is preparation for adding namespace to ceph_file_layout structure. Signed-off-by: Yan, Zheng