kernel/git/stable/linux.git/fs/f2fs/file.c, branch linux-4.7.y

Merge tag 'for-f2fs-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

2016-05-22T01:25:28+00:00

Pull f2fs updates from Jaegeuk Kim: "In this round, as Ted pointed out, fscrypto allows one more key prefix given by filesystem to resolve backward compatibility issues. Other than that, we've fixed several error handling cases by introducing a fault injection facility. We've also achieved performance improvement in some workloads as well as a bunch of bug fixes. Summary: Enhancements: - fs-specific prefix for fscrypto - fault injection facility - expose validity bitmaps for user to be aware of fragmentation - fallocate/rm/preallocation speed up - use percpu counters Bug fixes: - some inline_dentry/inline_data bugs - error handling for atomic/volatile/orphan inodes - recover broken superblock" * tag 'for-f2fs-4.7' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (73 commits) f2fs: fix to update dirty page count correctly f2fs: flush pending bios right away when error occurs f2fs: avoid ENOSPC fault in the recovery process f2fs: make exit_f2fs_fs more clear f2fs: use percpu_counter for total_valid_inode_count f2fs: use percpu_counter for alloc_valid_block_count f2fs: use percpu_counter for # of dirty pages in inode f2fs: use percpu_counter for page counters f2fs: use bio count instead of F2FS_WRITEBACK page count f2fs: manipulate dirty file inodes when DATA_FLUSH is set f2fs: add fault injection to sysfs f2fs: no need inc dirty pages under inode lock f2fs: fix incorrect error path handling in f2fs_move_rehashed_dirents f2fs: fix i_current_depth during inline dentry conversion f2fs: correct return value type of f2fs_fill_super f2fs: fix deadlock when flush inline data f2fs: avoid f2fs_bug_on during recovery f2fs: show # of orphan inodes f2fs: support in batch fzero in dnode page f2fs: support in batch multi blocks preallocation ...

lib/uuid.c: move generate_random_uuid() to uuid.c

2016-05-21T00:58:30+00:00

Let's gather the UUID related functions under one hood. Signed-off-by: Andy Shevchenko Reviewed-by: Matt Fleming Cc: Dmitry Kasatkin Cc: Mimi Zohar Cc: Rasmus Villemoes Cc: Arnd Bergmann Cc: "Theodore Ts'o" Cc: Al Viro Cc: Jens Axboe Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

f2fs: flush pending bios right away when error occurs

2016-05-20T18:46:15+00:00

Given errors, this patch flushes pending bios as soon as possible. Signed-off-by: Jaegeuk Kim

f2fs: use percpu_counter for # of dirty pages in inode

2016-05-18T20:57:28+00:00

This patch adds percpu_counter for # of dirty pages in inode. Signed-off-by: Jaegeuk Kim

Merge branch 'work.preadv2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2016-05-17T22:05:23+00:00

Pull vfs cleanups from Al Viro: "More cleanups from Christoph" * 'work.preadv2' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: nfsd: use RWF_SYNC fs: add RWF_DSYNC aand RWF_SYNC ceph: use generic_write_sync fs: simplify the generic_write_sync prototype fs: add IOCB_SYNC and IOCB_DSYNC direct-io: remove the offset argument to dio_complete direct-io: eliminate the offset argument to ->direct_IO xfs: eliminate the pos variable in xfs_file_dio_aio_write filemap: remove the pos argument to generic_file_direct_write filemap: remove pos variables in generic_file_read_iter

f2fs: support in batch fzero in dnode page

2016-05-11T16:56:36+00:00

This patch tries to speedup fzero_range by making space preallocation and address removal of blocks in one dnode page as in batch operation. In virtual machine, with zram driver: dd if=/dev/zero of=/mnt/f2fs/file bs=1M count=4096 time xfs_io -f /mnt/f2fs/file -c "fzero 0 4096M" Before: real 0m3.276s user 0m0.008s sys 0m3.260s After: real 0m1.568s user 0m0.000s sys 0m1.564s Signed-off-by: Chao Yu [Jaegeuk Kim: consider ENOSPC case] Signed-off-by: Jaegeuk Kim

f2fs: make atomic/volatile operation exclusive

2016-05-11T16:56:34+00:00

atomic/volatile ioctl interfaces are exposed to user like other file operation interface, it needs to make them getting exclusion against to each other to avoid potential conflict among these operations in concurrent scenario. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: use mnt_{want,drop}_write_file in ioctl

2016-05-11T16:56:32+00:00

In interfaces of ioctl, mnt_{want,drop}_write_file should be used for: - get exclusion against file system freezing which may used by lvm snapshot. - do telling filesystem that a write is about to be performed on it, and make sure that the writes are permitted. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim

f2fs: read node blocks ahead when truncating blocks

2016-05-07T17:44:56+00:00

This patch enables reading node blocks in advance when truncating large data blocks. > time rm $MNT/testfile (500GB) after drop_cachees Before : 9.422 s After : 4.821 s Reported-by: Stephen Bates Signed-off-by: Jaegeuk Kim

f2fs: fallocate data blocks in single locked node page

2016-05-07T17:44:55+00:00

This patch is to improve the expand_inode speed in fallocate by allocating data blocks as many as possible in single locked node page. In SSD, # time fallocate -l 500G $MNT/testfile Before : 1m 33.410 s After : 24.758 s Reported-by: Stephen Bates Signed-off-by: Jaegeuk Kim