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| author | Chao Yu <yuchao0@huawei.com> | 2018-07-19 23:57:54 +0800 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk@kernel.org> | 2018-08-01 11:52:36 -0700 |
| commit | 797c1cb56ba58bf42742e9446226345a6216d832 (patch) | |
| tree | df0c8215c666c02446cb6bffab81df1e031d436d /fs/f2fs/f2fs.h | |
| parent | e6b0b159cf2f62de69561f585fe8515d3d9189d4 (diff) | |
| download | linux-stable-797c1cb56ba58bf42742e9446226345a6216d832.tar.gz linux-stable-797c1cb56ba58bf42742e9446226345a6216d832.tar.bz2 linux-stable-797c1cb56ba58bf42742e9446226345a6216d832.zip | |
f2fs: restrict setting up inode.i_advise
In order to give advise to f2fs to recognize hot/cold file, it is possible
that we can set specific bit in inode.i_advise through setxattr(), but
there are several bits which are used internally, such as encrypt_bit,
keep_size_bit, they should never be changed through setxattr().
So that this patch 1) adds FADVISE_MODIFIABLE_BITS to filter modifiable
bits user given, 2) supports to clear {hot,cold}_file bits.
Signed-off-by: Chao Yu <yuchao0@huawei.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>
Diffstat (limited to 'fs/f2fs/f2fs.h')
| -rw-r--r-- | fs/f2fs/f2fs.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index 5ed85e2b36cd..ff8f8d93acac 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -604,6 +604,8 @@ enum { #define FADVISE_HOT_BIT 0x20 #define FADVISE_VERITY_BIT 0x40 /* reserved */ +#define FADVISE_MODIFIABLE_BITS (FADVISE_COLD_BIT | FADVISE_HOT_BIT) + #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT) #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT) #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT) |