Messages in this thread Patch in this message | | | Subject | Re: [f2fs-dev] [PATCH] f2fs: export pin_file flag to user | From | Chao Yu <> | Date | Fri, 4 Jan 2019 17:00:15 +0800 |
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On 2019/1/4 12:19, Jaegeuk Kim wrote: > This exports pin_file status to user.
Semantics of pin_file flag is the same as nocow flag which is more widely used in lsattr/chattr and vfs now.
#define FS_NOCOW_FL 0x00800000 /* Do not cow file */
lsattr/chattr no copy on write (C)
How about exporting it via F2FS_NOCOW_FL(0x00800000)?
Thanks,
> > Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org> > --- > fs/f2fs/f2fs.h | 3 ++- > fs/f2fs/file.c | 2 ++ > 2 files changed, 4 insertions(+), 1 deletion(-) > > diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h > index 12fabd6735dd..036fd62010c1 100644 > --- a/fs/f2fs/f2fs.h > +++ b/fs/f2fs/f2fs.h > @@ -2303,9 +2303,10 @@ static inline void f2fs_change_bit(unsigned int nr, char *addr) > #define F2FS_EOFBLOCKS_FL 0x00400000 /* Blocks allocated beyond EOF */ > #define F2FS_INLINE_DATA_FL 0x10000000 /* Inode has inline data. */ > #define F2FS_PROJINHERIT_FL 0x20000000 /* Create with parents projid */ > +#define F2FS_PIN_FILE_FL 0x40000000 /* pin_file status */ > #define F2FS_RESERVED_FL 0x80000000 /* reserved for ext4 lib */ > > -#define F2FS_FL_USER_VISIBLE 0x304BDFFF /* User visible flags */ > +#define F2FS_FL_USER_VISIBLE 0x704BDFFF /* User visible flags */ > #define F2FS_FL_USER_MODIFIABLE 0x204BC0FF /* User modifiable flags */ > > /* Flags we can manipulate with through F2FS_IOC_FSSETXATTR */ > diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c > index ae2b45e75847..eb099f1ee937 100644 > --- a/fs/f2fs/file.c > +++ b/fs/f2fs/file.c > @@ -1651,6 +1651,8 @@ static int f2fs_ioc_getflags(struct file *filp, unsigned long arg) > flags |= F2FS_ENCRYPT_FL; > if (f2fs_has_inline_data(inode) || f2fs_has_inline_dentry(inode)) > flags |= F2FS_INLINE_DATA_FL; > + if (is_inode_flag_set(inode, FI_PIN_FILE)) > + flags |= F2FS_PIN_FILE_FL; > > flags &= F2FS_FL_USER_VISIBLE; > >
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