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| author | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-10-10 00:11:38 +0200 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2015-10-12 22:38:03 +0200 |
| commit | a56c7c6fb3c60857c1335bcb8b914e6f65655486 (patch) | |
| tree | b05bb39180addddee4376a8e6d6169776375eb62 /fs/f2fs/f2fs.h | |
| parent | f2fs: fix SSA updates resulting in corruption (diff) | |
| download | linux-a56c7c6fb3c60857c1335bcb8b914e6f65655486.tar.xz linux-a56c7c6fb3c60857c1335bcb8b914e6f65655486.zip | |
f2fs: set GFP_NOFS for grab_cache_page
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>
Diffstat (limited to 'fs/f2fs/f2fs.h')
| -rw-r--r-- | fs/f2fs/f2fs.h | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 6f2310ca3910..6ba5a599f1f6 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -1233,6 +1233,14 @@ static inline unsigned int valid_inode_count(struct f2fs_sb_info *sbi) return sbi->total_valid_inode_count; } +static inline struct page *f2fs_grab_cache_page(struct address_space *mapping, + pgoff_t index, bool for_write) +{ + if (!for_write) + return grab_cache_page(mapping, index); + return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS); +} + static inline void f2fs_copy_page(struct page *src, struct page *dst) { char *src_kaddr = kmap(src); @@ -1831,9 +1839,9 @@ void set_data_blkaddr(struct dnode_of_data *); int reserve_new_block(struct dnode_of_data *); int f2fs_get_block(struct dnode_of_data *, pgoff_t); int f2fs_reserve_block(struct dnode_of_data *, pgoff_t); -struct page *get_read_data_page(struct inode *, pgoff_t, int); +struct page *get_read_data_page(struct inode *, pgoff_t, int, bool); struct page *find_data_page(struct inode *, pgoff_t); -struct page *get_lock_data_page(struct inode *, pgoff_t); +struct page *get_lock_data_page(struct inode *, pgoff_t, bool); struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool); int do_write_data_page(struct f2fs_io_info *); int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64); |