kernel.git/fs/f2fs/file.c, branch linux-4.0.y

Merge tag 'for-f2fs-3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

2015-02-13T03:28:50Z

Pull f2fs updates from Jaegeuk Kim: "Major changes are to: - add f2fs_io_tracer and F2FS_IOC_GETVERSION - fix wrong acl assignment from parent - fix accessing wrong data blocks - fix wrong condition check for f2fs_sync_fs - align start block address for direct_io - add and refactor the readahead flows of FS metadata - refactor atomic and volatile write policies But most of patches are for clean-ups and minor bug fixes. Some of them refactor old code too" * tag 'for-f2fs-3.20' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (64 commits) f2fs: use spinlock for segmap_lock instead of rwlock f2fs: fix accessing wrong indexed data blocks f2fs: avoid variable length array f2fs: fix sparse warnings f2fs: allocate data blocks in advance for f2fs_direct_IO f2fs: introduce macros to convert bytes and blocks in f2fs f2fs: call set_buffer_new for get_block f2fs: check node page contents all the time f2fs: avoid data offset overflow when lseeking huge file f2fs: fix to use highmem for pages of newly created directory f2fs: introduce a batched trim f2fs: merge {invalidate,release}page for meta/node/data pages f2fs: show the number of writeback pages in stat f2fs: keep PagePrivate during releasepage f2fs: should fail mount when trying to recover data on read-only dev f2fs: split UMOUNT and FASTBOOT flags f2fs: avoid write_checkpoint if f2fs is mounted readonly f2fs: support norecovery mount option f2fs: fix not to drop mount options when retrying fill_super f2fs: merge flags in struct f2fs_sb_info ...

f2fs: introduce macros to convert bytes and blocks in f2fs

2015-02-12T01:04:48Z

This patch adds two macros for transition between byte and block offsets. Currently, f2fs only supports 4KB blocks, so use the default size for now. Signed-off-by: Jaegeuk Kim

f2fs: avoid data offset overflow when lseeking huge file

2015-02-12T01:04:46Z

xfstest generic/285 complains our issue in lseeking huge file. Here is the detail output of generic/285: "./check -f2fs tests/generic/285 Ran: generic/285 Failures: generic/285 Failed 1 of 1 tests 10. Test a huge file for offset overflow 10.01 SEEK_HOLE expected 65536 or 8589934592, got 65536. succ 10.02 SEEK_HOLE expected 65536 or 8589934592, got 65536. succ 10.03 SEEK_DATA expected 0 or 0, got 0. succ 10.04 SEEK_DATA expected 1 or 1, got 1. succ 10.05 SEEK_HOLE expected 8589934592 or 8589934592, got 0. FAIL 10.06 SEEK_DATA expected 8589869056 or 8589869056, got 8589869056. succ 10.07 SEEK_DATA expected 8589869057 or 8589869057, got 8589869057. succ 10.08 SEEK_DATA expected 8589869056 or 8589869056, got 4294901760. FAIL" The reason of this issue is: We will calculate current offset through left shifting page-offset with PAGE_CACHE_SHIFT bits, but our page-offset is a type of unsigned long, its size is 4 bytes in 32-bits machine. So if our page-offset is bigger than (1 << 32 / pagesize - 1), result of left shifting will overflow. Let's fix this issue by casting type of page-offset to type of current offset: loff_t. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: add F2FS_IOC_GETVERSION support

2015-02-12T01:04:35Z

In this patch we add the FS_IOC_GETVERSION ioctl for getting i_generation from inode, after that, users can list file's generation number by using "lsattr -v". Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: avoid infinite loop on cp_error

2015-02-12T01:04:30Z

If cp_error is set, we should avoid all the infinite loop. In f2fs_sync_file, there is a hole, and this patch fixes that. Signed-off-by: Jaegeuk Kim

mm: drop vm_ops->remap_pages and generic_file_remap_pages() stub

2015-02-10T22:30:30Z

Nobody uses it anymore. [akpm@linux-foundation.org: fix filemap_xip.c] Signed-off-by: Kirill A. Shutemov Cc: Wu Fengguang Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

f2fs: clean up to remove parameter

2015-01-10T01:02:26Z

This patch uses dn->data_blkaddr as a parameter for the destination block address. Signed-off-by: Jaegeuk Kim

f2fs: activate f2fs_trace_ios

2015-01-10T01:02:24Z

This patch activates f2fs_trace_ios. Signed-off-by: Jaegeuk Kim

f2fs: change atomic and volatile write policies

2015-01-10T01:02:22Z

This patch adds two new ioctls to release inmemory pages grabbed by atomic writes. o f2fs_ioc_abort_volatile_write - If transaction was failed, all the grabbed pages and data should be written. o f2fs_ioc_release_volatile_write - This is to enhance the performance of PERSIST mode in sqlite. In order to avoid huge memory consumption which causes OOM, this patch changes volatile writes to use normal dirty pages, instead blocked flushing to the disk as long as system does not suffer from memory pressure. Signed-off-by: Jaegeuk Kim

f2fs: cleanup path to need cp at fsync

2014-12-08T18:40:22Z

Added some commentaries for code readability and cleaned up if-statement clearly. Signed-off-by: Changman Lee Signed-off-by: Jaegeuk Kim