pm24.git/fs/f2fs, branch v5.6

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

2020-02-08T21:04:49Z

Pull misc vfs updates from Al Viro: - bmap series from cmaiolino - getting rid of convolutions in copy_mount_options() (use a couple of copy_from_user() instead of the __get_user() crap) * 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: saner copy_mount_options() fibmap: Reject negative block numbers fibmap: Use bmap instead of ->bmap method in ioctl_fibmap ecryptfs: drop direct calls to ->bmap cachefiles: drop direct usage of ->bmap method. fs: Enable bmap() function to properly return errors

Merge branch 'imm.timestamp' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs

2020-02-05T05:02:42Z

Pull vfs timestamp updates from Al Viro: "More 64bit timestamp work" * 'imm.timestamp' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: kernfs: don't bother with timestamp truncation fs: Do not overload update_time fs: Delete timespec64_trunc() fs: ubifs: Eliminate timespec64_trunc() usage fs: ceph: Delete timespec64_trunc() usage fs: cifs: Delete usage of timespec64_trunc fs: fat: Eliminate timespec64_trunc() usage utimes: Clamp the timestamps in notify_change()

treewide: remove redundant IS_ERR() before error code check

2020-02-04T03:05:27Z

'PTR_ERR(p) == -E*' is a stronger condition than IS_ERR(p). Hence, IS_ERR(p) is unneeded. The semantic patch that generates this commit is as follows: // @@ expression ptr; constant error_code; @@ -IS_ERR(ptr) && (PTR_ERR(ptr) == - error_code) +PTR_ERR(ptr) == - error_code // Link: http://lkml.kernel.org/r/20200106045833.1725-1-masahiroy@kernel.org Signed-off-by: Masahiro Yamada Cc: Julia Lawall Acked-by: Stephen Boyd [drivers/clk/clk.c] Acked-by: Bartosz Golaszewski [GPIO] Acked-by: Wolfram Sang [drivers/i2c] Acked-by: Rafael J. Wysocki [acpi/scan.c] Acked-by: Rob Herring Cc: Eric Biggers Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds

fs: Enable bmap() function to properly return errors

2020-02-03T13:05:37Z

By now, bmap() will either return the physical block number related to the requested file offset or 0 in case of error or the requested offset maps into a hole. This patch makes the needed changes to enable bmap() to proper return errors, using the return value as an error return, and now, a pointer must be passed to bmap() to be filled with the mapped physical block. It will change the behavior of bmap() on return: - negative value in case of error - zero on success or map fell into a hole In case of a hole, the *block will be zero too Since this is a prep patch, by now, the only error return is -EINVAL if ->bmap doesn't exist. Reviewed-by: Christoph Hellwig Signed-off-by: Carlos Maiolino Signed-off-by: Al Viro

Merge tag 'f2fs-for-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs

2020-01-30T23:39:24Z

Pull f2fs updates from Jaegeuk Kim: "In this series, we've implemented transparent compression experimentally. It supports LZO and LZ4, but will add more later as we investigate in the field more. At this point, the feature doesn't expose compressed space to user directly in order to guarantee potential data updates later to the space. Instead, the main goal is to reduce data writes to flash disk as much as possible, resulting in extending disk life time as well as relaxing IO congestion. Alternatively, we're also considering to add ioctl() to reclaim compressed space and show it to user after putting the immutable bit. Enhancements: - add compression support - avoid unnecessary locks in quota ops - harden power-cut scenario for zoned block devices - use private bio_set to avoid IO congestion - replace GC mutex with rwsem to serialize callers Bug fixes: - fix dentry consistency and memory corruption in rename()'s error case - fix wrong swap extent reports - fix casefolding bugs - change lock coverage to avoid deadlock - avoid GFP_KERNEL under f2fs_lock_op And, we've cleaned up sysfs entries to prepare no debugfs" * tag 'f2fs-for-5.6' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs: (31 commits) f2fs: fix race conditions in ->d_compare() and ->d_hash() f2fs: fix dcache lookup of !casefolded directories f2fs: Add f2fs stats to sysfs f2fs: delete duplicate information on sysfs nodes f2fs: change to use rwsem for gc_mutex f2fs: update f2fs document regarding to fsync_mode f2fs: add a way to turn off ipu bio cache f2fs: code cleanup for f2fs_statfs_project() f2fs: fix miscounted block limit in f2fs_statfs_project() f2fs: show the CP_PAUSE reason in checkpoint traces f2fs: fix deadlock allocating bio_post_read_ctx from mempool f2fs: remove unneeded check for error allocating bio_post_read_ctx f2fs: convert inline_dir early before starting rename f2fs: fix memleak of kobject f2fs: fix to add swap extent correctly f2fs: run fsck when getting bad inode during GC f2fs: support data compression f2fs: free sysfs kobject f2fs: declare nested quota_sem and remove unnecessary sems f2fs: don't put new_page twice in f2fs_rename ...

Merge tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/fscrypt

2020-01-28T23:31:03Z

Pull fsverity updates from Eric Biggers: - Optimize fs-verity sequential read performance by implementing readahead of Merkle tree pages. This allows the Merkle tree to be read in larger chunks. - Optimize FS_IOC_ENABLE_VERITY performance in the uncached case by implementing readahead of data pages. - Allocate the hash requests from a mempool in order to eliminate the possibility of allocation failures during I/O. * tag 'fsverity-for-linus' of git://git.kernel.org/pub/scm/fs/fscrypt/fscrypt: fs-verity: use u64_to_user_ptr() fs-verity: use mempool for hash requests fs-verity: implement readahead of Merkle tree pages fs-verity: implement readahead for FS_IOC_ENABLE_VERITY

f2fs: fix race conditions in ->d_compare() and ->d_hash()

2020-01-24T18:04:09Z

Since ->d_compare() and ->d_hash() can be called in RCU-walk mode, ->d_parent and ->d_inode can be concurrently modified, and in particular, ->d_inode may be changed to NULL. For f2fs_d_hash() this resulted in a reproducible NULL dereference if a lookup is done in a directory being deleted, e.g. with: int main() { if (fork()) { for (;;) { mkdir("subdir", 0700); rmdir("subdir"); } } else { for (;;) access("subdir/file", 0); } } ... or by running the 't_encrypted_d_revalidate' program from xfstests. Both repros work in any directory on a filesystem with the encoding feature, even if the directory doesn't actually have the casefold flag. I couldn't reproduce a crash in f2fs_d_compare(), but it appears that a similar crash is possible there. Fix these bugs by reading ->d_parent and ->d_inode using READ_ONCE() and falling back to the case sensitive behavior if the inode is NULL. Reported-by: Al Viro Fixes: 2c2eb7a300cd ("f2fs: Support case-insensitive file name lookups") Cc: # v5.4+ Signed-off-by: Eric Biggers Signed-off-by: Jaegeuk Kim

f2fs: fix dcache lookup of !casefolded directories

2020-01-24T17:53:02Z

Do the name comparison for non-casefolded directories correctly. This is analogous to ext4's commit 66883da1eee8 ("ext4: fix dcache lookup of !casefolded directories"). Fixes: 2c2eb7a300cd ("f2fs: Support case-insensitive file name lookups") Cc: # v5.4+ Signed-off-by: Eric Biggers Signed-off-by: Jaegeuk Kim

f2fs: Add f2fs stats to sysfs

2020-01-23T17:24:25Z

Currently f2fs stats are only available from /d/f2fs/status. This patch adds some of the f2fs stats to sysfs so that they are accessible even when debugfs is not mounted. The following sysfs nodes are added: -/sys/fs/f2fs//free_segments -/sys/fs/f2fs//cp_foreground_calls -/sys/fs/f2fs//cp_background_calls -/sys/fs/f2fs//gc_foreground_calls -/sys/fs/f2fs//gc_background_calls -/sys/fs/f2fs//moved_blocks_foreground -/sys/fs/f2fs//moved_blocks_background -/sys/fs/f2fs//avg_vblocks Signed-off-by: Hridya Valsaraju [Jaegeuk Kim: allow STAT_FS without DEBUG_FS] Signed-off-by: Jaegeuk Kim

f2fs: change to use rwsem for gc_mutex

2020-01-18T00:48:44Z

Mutex lock won't serialize callers, in order to avoid starving of unlucky caller, let's use rwsem lock instead. Signed-off-by: Chao Yu Signed-off-by: Jaegeuk Kim