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| author | Amir Goldstein <amir73il@gmail.com> | 2018-01-14 19:25:31 +0200 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2018-01-24 11:25:58 +0100 |
| commit | c62520a83bceae0bb0b7b3de10c3e81205cd3823 (patch) | |
| tree | f94b1fca8653e0a659d729859b188a74caaebaec /fs/overlayfs/util.c | |
| parent | aa3ff3c152ff94ef045ed802db7535167f8a21ab (diff) | |
| download | blackbird-obmc-linux-c62520a83bceae0bb0b7b3de10c3e81205cd3823.tar.gz blackbird-obmc-linux-c62520a83bceae0bb0b7b3de10c3e81205cd3823.zip | |
ovl: store 'has_upper' and 'opaque' as bit flags
We need to make some room in struct ovl_entry to store information
about redirected ancestors for NFS export, so cram two booleans as
bit flags.
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/overlayfs/util.c')
| -rw-r--r-- | fs/overlayfs/util.c | 30 |
1 files changed, 19 insertions, 11 deletions
diff --git a/fs/overlayfs/util.c b/fs/overlayfs/util.c index 68541eb5be8e..930784a26623 100644 --- a/fs/overlayfs/util.c +++ b/fs/overlayfs/util.c @@ -210,10 +210,24 @@ void ovl_set_dir_cache(struct inode *inode, struct ovl_dir_cache *cache) OVL_I(inode)->cache = cache; } +void ovl_dentry_set_flag(unsigned long flag, struct dentry *dentry) +{ + set_bit(flag, &OVL_E(dentry)->flags); +} + +void ovl_dentry_clear_flag(unsigned long flag, struct dentry *dentry) +{ + clear_bit(flag, &OVL_E(dentry)->flags); +} + +bool ovl_dentry_test_flag(unsigned long flag, struct dentry *dentry) +{ + return test_bit(flag, &OVL_E(dentry)->flags); +} + bool ovl_dentry_is_opaque(struct dentry *dentry) { - struct ovl_entry *oe = dentry->d_fsdata; - return oe->opaque; + return ovl_dentry_test_flag(OVL_E_OPAQUE, dentry); } bool ovl_dentry_is_whiteout(struct dentry *dentry) @@ -223,9 +237,7 @@ bool ovl_dentry_is_whiteout(struct dentry *dentry) void ovl_dentry_set_opaque(struct dentry *dentry) { - struct ovl_entry *oe = dentry->d_fsdata; - - oe->opaque = true; + ovl_dentry_set_flag(OVL_E_OPAQUE, dentry); } /* @@ -236,16 +248,12 @@ void ovl_dentry_set_opaque(struct dentry *dentry) */ bool ovl_dentry_has_upper_alias(struct dentry *dentry) { - struct ovl_entry *oe = dentry->d_fsdata; - - return oe->has_upper; + return ovl_dentry_test_flag(OVL_E_UPPER_ALIAS, dentry); } void ovl_dentry_set_upper_alias(struct dentry *dentry) { - struct ovl_entry *oe = dentry->d_fsdata; - - oe->has_upper = true; + ovl_dentry_set_flag(OVL_E_UPPER_ALIAS, dentry); } bool ovl_redirect_dir(struct super_block *sb) |
