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2016-08-06Merge branch 'work.const-qstr' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs Pull qstr constification updates from Al Viro: "Fairly self-contained bunch - surprising lot of places passes struct qstr * as an argument when const struct qstr * would suffice; it complicates analysis for no good reason. I'd prefer to feed that separately from the assorted fixes (those are in #for-linus and with somewhat trickier topology)" * 'work.const-qstr' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: qstr: constify instances in adfs qstr: constify instances in lustre qstr: constify instances in f2fs qstr: constify instances in ext2 qstr: constify instances in vfat qstr: constify instances in procfs qstr: constify instances in fuse qstr constify instances in fs/dcache.c qstr: constify instances in nfs qstr: constify instances in ocfs2 qstr: constify instances in autofs4 qstr: constify instances in hfs qstr: constify instances in hfsplus qstr: constify instances in logfs qstr: constify dentry_init_security
2016-07-30qstr: constify instances in f2fsAl Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-07-20f2fs: fix to report error number of f2fs_find_entryChao Yu
This patch fixes to report the right error number of f2fs_find_entry to its caller. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-07-08f2fs: avoid mark_inode_dirtyJaegeuk Kim
Let's check inode's dirtiness before calling mark_inode_dirty. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-07-06f2fs: call update_inode_page for orphan inodesJaegeuk Kim
Let's store orphan inode pages right away. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-06-15f2fs: find parent dentry correctlySheng Yong
If dotdot directory is corrupted, its slot may be ocupied by another file. In this case, dentry[1] is not the parent directory. Rename and cross-rename will update the inode in dentry[1] incorrectly. This patch finds dotdot dentry by name. Signed-off-by: Sheng Yong <shengyong1@huawei.com> [Jaegeuk Kim: remove wron bug_on] Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-06-13f2fs: fix deadlock in add_link failureJaegeuk Kim
mkdir sync_dirty_inode - init_inode_metadata - lock_page(node) - make_empty_dir - filemap_fdatawrite() - do_writepages - lock_page(data) - write_page(data) - lock_page(node) - f2fs_init_acl - error - truncate_inode_pages - lock_page(data) So, we don't need to truncate data pages in this error case, which will be done by f2fs_evict_inode. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-06-07f2fs: remove deprecated parameterJaegeuk Kim
Remove deprecated paramter. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-06-02f2fs: return error of f2fs_lookupJaegeuk Kim
Now we can report an error to f2fs_lookup given by f2fs_find_entry. Suggested-by: He YunLei <heyunlei@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-06-02f2fs: propagate error given by f2fs_find_entryJaegeuk Kim
If we get ENOMEM or EIO in f2fs_find_entry, we should stop right away. Otherwise, for example, we can get duplicate directory entry by ->chash and ->clevel. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-06-02f2fs: remove syncing inode page in all the casesJaegeuk Kim
This patch reduces to call them across the whole tree. - sync_inode_page() - update_inode_page() - update_inode() - f2fs_write_inode() Instead, checkpoint will flush all the dirty inode metadata before syncing node pages. Note that, this is doable, since we call mark_inode_dirty_sync() for all inode's field change which needs to update on-disk inode as well. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-06-02f2fs: call mark_inode_dirty_sync for i_field changesJaegeuk Kim
This patch calls mark_inode_dirty_sync() for the following on-disk inode changes. -> largest -> ctime/mtime/atime -> i_current_depth -> i_xattr_nid -> i_pino -> i_advise -> i_flags -> i_mode Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-06-02f2fs: introduce f2fs_i_links_write with mark_inode_dirty_syncJaegeuk Kim
This patch introduces f2fs_i_links_write() to call mark_inode_dirty_sync() when changing inode->i_links. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-06-02f2fs: introduce f2fs_i_size_write with mark_inode_dirty_syncJaegeuk Kim
This patch introduces f2fs_i_size_write() to call mark_inode_dirty_sync() with i_size_write(). Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-06-02f2fs: use inode pointer for {set, clear}_inode_flagJaegeuk Kim
This patch refactors to use inode pointer for set_inode_flag and clear_inode_flag. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-05-21Merge tag 'for-f2fs-4.7' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs 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 ...
2016-05-10f2fs: switch to ->iterate_shared()Al Viro
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2016-05-07f2fs: revisit error handling flowsJaegeuk Kim
This patch fixes a couple of bugs regarding to orphan inodes when handling errors. This tries to - call alloc_nid_done with add_orphan_inode in handle_failed_inode - let truncate blocks in f2fs_evict_inode - not make a bad inode due to i_mode change Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-05-07f2fs: inject ENOSPC failuresJaegeuk Kim
This patch injects ENOSPC failures. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-05-07f2fs: introduce f2fs_kmalloc to wrap kmallocJaegeuk Kim
This patch adds f2fs_kmalloc. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-04-27f2fs: fix to return 0 if err == -ENOENT in f2fs_readdirYunlong Song
Commit 57b62d29ad5b384775974973087d47755a8c6fcc ("f2fs: fix to report error in f2fs_readdir") causes f2fs_readdir to return -ENOENT when get_lock_data_page returns -ENOENT. However, the original logic is to continue when get_lock_data_page returns -ENOENT, but it forgets to reset err to 0. This will cause getdents64 incorretly return -ENOENT when lastdirent is NULL in getdents64. This will lead to a wrong return value for syscall caller. Signed-off-by: Yunlong Song <yunlong.song@huawei.com> Reviewed-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-04-27f2fs: be aware of invalid filename lengthChao Yu
The filename length in dirent of may become zero-sized after random junk data injection, once encounter such dirent, find_target_dentry or f2fs_add_inline_entries will run into an infinite loop. So let f2fs being aware of that to avoid deadloop. Signed-off-by: Chao Yu <yuchao0@huawei.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-04-15f2fs: fix to convert inline directory correctlyChao Yu
With below serials, we will lose parts of dirents: 1) mount f2fs with inline_dentry option 2) echo 1 > /sys/fs/f2fs/sdX/dir_level 3) mkdir dir 4) touch 180 files named [1-180] in dir 5) touch 181 in dir 6) echo 3 > /proc/sys/vm/drop_caches 7) ll dir ls: cannot access 2: No such file or directory ls: cannot access 4: No such file or directory ls: cannot access 5: No such file or directory ls: cannot access 6: No such file or directory ls: cannot access 8: No such file or directory ls: cannot access 9: No such file or directory ... total 360 drwxr-xr-x 2 root root 4096 Feb 19 15:12 ./ drwxr-xr-x 3 root root 4096 Feb 19 15:11 ../ -rw-r--r-- 1 root root 0 Feb 19 15:12 1 -rw-r--r-- 1 root root 0 Feb 19 15:12 10 -rw-r--r-- 1 root root 0 Feb 19 15:12 100 -????????? ? ? ? ? ? 101 -????????? ? ? ? ? ? 102 -????????? ? ? ? ? ? 103 ... The reason is: when doing the inline dir conversion, we didn't consider that directory has hierarchical hash structure which can be configured through sysfs interface 'dir_level'. By default, dir_level of directory inode is 0, it means we have one bucket in hash table located in first level, all dirents will be hashed in this bucket, so it has no problem for us to do the duplication simply between inline dentry page and converted normal dentry page. However, if we configured dir_level with the value N (greater than 0), it will expand the bucket number of first level hash table by 2^N - 1, it hashs dirents into different buckets according their hash value, if we still move all dirents to first bucket, it makes incorrent locating for inline dirents, the result is, although we can iterate all dirents through ->readdir, we can't stat some of them in ->lookup which based on hash table searching. This patch fixes this issue by rehashing dirents into correct position when converting inline directory. Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-04-04mm, fs: get rid of PAGE_CACHE_* and page_cache_{get,release} macrosKirill A. Shutemov
PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} macros were introduced *long* time ago with promise that one day it will be possible to implement page cache with bigger chunks than PAGE_SIZE. This promise never materialized. And unlikely will. We have many places where PAGE_CACHE_SIZE assumed to be equal to PAGE_SIZE. And it's constant source of confusion on whether PAGE_CACHE_* or PAGE_* constant should be used in a particular case, especially on the border between fs and mm. Global switching to PAGE_CACHE_SIZE != PAGE_SIZE would cause to much breakage to be doable. Let's stop pretending that pages in page cache are special. They are not. The changes are pretty straight-forward: - <foo> << (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> <foo>; - <foo> >> (PAGE_CACHE_SHIFT - PAGE_SHIFT) -> <foo>; - PAGE_CACHE_{SIZE,SHIFT,MASK,ALIGN} -> PAGE_{SIZE,SHIFT,MASK,ALIGN}; - page_cache_get() -> get_page(); - page_cache_release() -> put_page(); This patch contains automated changes generated with coccinelle using script below. For some reason, coccinelle doesn't patch header files. I've called spatch for them manually. The only adjustment after coccinelle is revert of changes to PAGE_CAHCE_ALIGN definition: we are going to drop it later. There are few places in the code where coccinelle didn't reach. I'll fix them manually in a separate patch. Comments and documentation also will be addressed with the separate patch. virtual patch @@ expression E; @@ - E << (PAGE_CACHE_SHIFT - PAGE_SHIFT) + E @@ expression E; @@ - E >> (PAGE_CACHE_SHIFT - PAGE_SHIFT) + E @@ @@ - PAGE_CACHE_SHIFT + PAGE_SHIFT @@ @@ - PAGE_CACHE_SIZE + PAGE_SIZE @@ @@ - PAGE_CACHE_MASK + PAGE_MASK @@ expression E; @@ - PAGE_CACHE_ALIGN(E) + PAGE_ALIGN(E) @@ expression E; @@ - page_cache_get(E) + get_page(E) @@ expression E; @@ - page_cache_release(E) + put_page(E) Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Acked-by: Michal Hocko <mhocko@suse.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-03-17f2fs: clean up opened code with f2fs_update_dentryChao Yu
Just clean up opened code with existing function, no logic change. Signed-off-by: Chao Yu <chao@kernel.org> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-03-17f2fs crypto: sync ext4_lookup and ext4_file_openJaegeuk Kim
This patch tries to catch up with lookup and open policies in ext4. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-03-17fs crypto: move per-file encryption from f2fs tree to fs/cryptoJaegeuk Kim
This patch adds the renamed functions moved from the f2fs crypto files. 1. definitions for per-file encryption used by ext4 and f2fs. 2. crypto.c for encrypt/decrypt functions a. IO preparation: - fscrypt_get_ctx / fscrypt_release_ctx b. before IOs: - fscrypt_encrypt_page - fscrypt_decrypt_page - fscrypt_zeroout_range c. after IOs: - fscrypt_decrypt_bio_pages - fscrypt_pullback_bio_page - fscrypt_restore_control_page 3. policy.c supporting context management. a. For ioctls: - fscrypt_process_policy - fscrypt_get_policy b. For context permission - fscrypt_has_permitted_context - fscrypt_inherit_context 4. keyinfo.c to handle permissions - fscrypt_get_encryption_info - fscrypt_free_encryption_info 5. fname.c to support filename encryption a. general wrapper functions - fscrypt_fname_disk_to_usr - fscrypt_fname_usr_to_disk - fscrypt_setup_filename - fscrypt_free_filename b. specific filename handling functions - fscrypt_fname_alloc_buffer - fscrypt_fname_free_buffer 6. Makefile and Kconfig Cc: Al Viro <viro@ftp.linux.org.uk> Signed-off-by: Michael Halcrow <mhalcrow@google.com> Signed-off-by: Ildar Muslukhov <ildarm@google.com> Signed-off-by: Uday Savagaonkar <savagaon@google.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-02-22f2fs crypto: make sure the encryption info is initialized on opendir(2)Chao Yu
This patch syncs f2fs with commit 6bc445e0ff44 ("ext4 crypto: make sure the encryption info is initialized on opendir(2)") from ext4. Signed-off-by: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-02-22f2fs: avoid garbage lenghs in dentriesJaegeuk Kim
This patch fixes to eliminate garbage name lengths in dentries in order to provide correct answers of readdir. For example, if a valid dentry consists of: bitmap : 1 1 1 1 len : 32 0 x 0, readdir can start with second bit_pos having len = 0. Or, it can start with third bit_pos having garbage. In both of cases, we should avoid to try filling dentries. So, this patch not only removes any garbage length, but also avoid entering zero length case in readdir. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-02-22f2fs: use wait_for_stable_page to avoid contentionJaegeuk Kim
In write_begin, if storage supports stable_page, we don't need to wait for writeback to update its contents. This patch introduces to use wait_for_stable_page instead of wait_on_page_writeback. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2016-01-11f2fs: detect idle time depending on user behaviorJaegeuk Kim
This patch adds last time that user requested filesystem operations. This information is used to detect whether system is idle or not later. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-12-31f2fs: remove f2fs_bug_on in terms of max_depthJaegeuk Kim
There is no report on this bug_on case, but if malicious attacker changed this field intentionally, we can just reset it as a MAX value. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-12-16f2fs: record dirty status of regular/symlink inodeChao Yu
Maintain regular/symlink inode which has dirty pages in global dirty list and record their total dirty pages count like the way of handling directory inode. Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-12-04f2fs: clean up error path in f2fs_readdirChao Yu
No logic changes, just clean up the error path. Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-12-04f2fs: fix to report error in f2fs_readdirChao Yu
get_lock_data_page in f2fs_readdir can fail due to a lot of reasons (i.e. no memory or IO error...), it's better to report this kind of error to user rather than ignoring it. Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-10-12f2fs: set GFP_NOFS for grab_cache_pageJaegeuk Kim
For normal inodes, their pages are allocated with __GFP_FS, which can cause filesystem calls when reclaiming memory. This can incur a dead lock condition accordingly. So, this patch addresses this problem by introducing f2fs_grab_cache_page(.., bool for_write), which calls grab_cache_page_write_begin() with AOP_FLAG_NOFS. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-10-09f2fs crypto: allocate buffer for decrypting filenameJaegeuk Kim
We got dentry pages from high_mem, and its address space directly goes into the decryption path via f2fs_fname_disk_to_usr. But, sg_init_one assumes the address is not from high_mem, so we can get this panic since it doesn't call kmap_high but kunmap_high is triggered at the end. kernel BUG at ../../../../../../kernel/mm/highmem.c:290! Internal error: Oops - BUG: 0 [#1] PREEMPT SMP ARM ... (kunmap_high+0xb0/0xb8) from [<c0114534>] (__kunmap_atomic+0xa0/0xa4) (__kunmap_atomic+0xa0/0xa4) from [<c035f028>] (blkcipher_walk_done+0x128/0x1ec) (blkcipher_walk_done+0x128/0x1ec) from [<c0366c24>] (crypto_cbc_decrypt+0xc0/0x170) (crypto_cbc_decrypt+0xc0/0x170) from [<c0367148>] (crypto_cts_decrypt+0xc0/0x114) (crypto_cts_decrypt+0xc0/0x114) from [<c035ea98>] (async_decrypt+0x40/0x48) (async_decrypt+0x40/0x48) from [<c032ca34>] (f2fs_fname_disk_to_usr+0x124/0x304) (f2fs_fname_disk_to_usr+0x124/0x304) from [<c03056fc>] (f2fs_fill_dentries+0xac/0x188) (f2fs_fill_dentries+0xac/0x188) from [<c03059c8>] (f2fs_readdir+0x1f0/0x300) (f2fs_readdir+0x1f0/0x300) from [<c0218054>] (vfs_readdir+0x90/0xb4) (vfs_readdir+0x90/0xb4) from [<c0218418>] (SyS_getdents64+0x64/0xcc) (SyS_getdents64+0x64/0xcc) from [<c0105ba0>] (ret_fast_syscall+0x0/0x30) Cc: <stable@vger.kernel.org> Reviewed-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-08-20f2fs: avoid clear valid pageChao Yu
In f2fs_delete_entry, if last dirent is remove from the dentry page, we will try to punch that page since it has no valid date in it. But truncate_hole which is used for punching could fail because of no memory or IO error, if that happened, we'd better skip clearing this valid dentry page. Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-06-01f2fs crypto: use per-inode tfm structureJaegeuk Kim
This patch applies the following ext4 patch: ext4 crypto: use per-inode tfm structure As suggested by Herbert Xu, we shouldn't allocate a new tfm each time we read or write a page. Instead we can use a single tfm hanging off the inode's crypt_info structure for all of our encryption needs for that inode, since the tfm can be used by multiple crypto requests in parallel. Also use cmpxchg() to avoid races that could result in crypt_info structure getting doubly allocated or doubly freed. Signed-off-by: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-06-01f2fs: add compat_ioctl to provide backward compatabilityhujianyang
introduce compat_ioctl to regular files, but doesn't add this functionality to f2fs_dir_operations. While running a 32-bit busybox, I met an error like this: (A is a directory) chattr: reading flags on A: Inappropriate ioctl for device This patch copies compat_ioctl from f2fs_file_operations and fix this problem. Signed-off-by: hujianyang <hujianyang@huawei.com> Reviewed-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-05-28f2fs crypto: add filename encryption for roll-forward recoveryJaegeuk Kim
This patch adds a bit flag to indicate whether or not i_name in the inode is encrypted. If this name is encrypted, we can't do recover_dentry during roll-forward. So, f2fs_sync_file() needs to do checkpoint, if this will be needed in future. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-05-28f2fs crypto: add filename encryption for f2fs_lookupJaegeuk Kim
This patch implements filename encryption support for f2fs_lookup. Note that, f2fs_find_entry should be outside of f2fs_(un)lock_op(). Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-05-28f2fs crypto: add filename encryption for f2fs_readdirJaegeuk Kim
This patch implements filename encryption support for f2fs_readdir. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-05-28f2fs crypto: add filename encryption for f2fs_add_linkJaegeuk Kim
This patch adds filename encryption support for f2fs_add_link. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-05-28f2fs crypto: activate encryption support for fs APIsJaegeuk Kim
This patch activates the following APIs for encryption support. The rules quoted by ext4 are: - An unencrypted directory may contain encrypted or unencrypted files or directories. - All files or directories in a directory must be protected using the same key as their containing directory. - Encrypted inode for regular file should not have inline_data. - Encrypted symlink and directory may have inline_data and inline_dentry. This patch activates the following APIs. 1. f2fs_link : validate context 2. f2fs_lookup : '' 3. f2fs_rename : '' 4. f2fs_create/f2fs_mkdir : inherit its dir's context 5. f2fs_direct_IO : do buffered io for regular files 6. f2fs_open : check encryption info 7. f2fs_file_mmap : '' 8. f2fs_setattr : '' 9. f2fs_file_write_iter : '' (Called by sys_io_submit) 10. f2fs_fallocate : do not support fcollapse 11. f2fs_evict_inode : free_encryption_info Signed-off-by: Michael Halcrow <mhalcrow@google.com> Signed-off-by: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-05-28f2fs: split find_data_page according to specific purposesJaegeuk Kim
This patch splits find_data_page as follows. 1. f2fs_gc - use get_read_data_page() with read only 2. find_in_level - use find_data_page without locked page 3. truncate_partial_page - In the case cache_only mode, just drop cached page. - Ohterwise, use get_lock_data_page() and guarantee to truncate Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-04-10f2fs: assign parent's i_mode for empty dirJaegeuk Kim
When assigning i_mode for dotdot, it needs to assign parent's i_mode. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-04-10f2fs: add F2FS_INLINE_DOTS to recover missing dot dentriesJaegeuk Kim
If f2fs was corrupted with missing dot dentries, it needs to recover them after fsck.f2fs detection. The underlying precedure is: 1. The fsck.f2fs remains F2FS_INLINE_DOTS flag in directory inode, if it detects missing dot dentries. 2. When f2fs looks up the corrupted directory, it triggers f2fs_add_link with proper inode numbers and their dot and dotdot names. 3. Once f2fs recovers the directory without errors, it removes F2FS_INLINE_DOTS finally. Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-04-10f2fs: fix to calculate max length of contiguous free slots correctlyChao Yu
When lookuping for creating, we will try to record the level of current dentry hash table if current dentry has enough contiguous slots for storing name of new file which will be created later, this can save our lookup time when add a link into parent dir. But currently in find_target_dentry, our current length of contiguous free slots is not calculated correctly. This make us leaving some holes in dentry block occasionally, it wastes our space of dentry block. Let's refactor the lookup flow for max slots as following to fix this issue: a) increase max_len if current slot is free; b) update max_slots with max_len if max_len is larger than max_slots; c) reset max_len to zero if current slot is not free. Signed-off-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
2015-04-10f2fs: remove unnecessary condition judgmentYuan Zhong
Remove the unnecessary condition judgment, because 'max_slots' has been initialized to '0' at the beginging of the function, as following: if (max_slots) *max_slots = 0; Signed-off-by: Yuan Zhong <yuan.mark.zhong@samsung.com> Reviewed-by: Chao Yu <chao2.yu@samsung.com> Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
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