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author | 2019-11-08 15:05:38 -0800 | |
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committer | 2019-11-10 16:54:24 -0800 | |
commit | 711c7dbf5fdafdbb2fb906b38cefb113bfdd4a79 (patch) | |
tree | 443b7ee94341d17fba96d3be8b36d167e330a033 /fs | |
parent | xfs: move the dir2 data block fixed offsets to struct xfs_da_geometry (diff) | |
download | linux-711c7dbf5fdafdbb2fb906b38cefb113bfdd4a79.tar.gz linux-711c7dbf5fdafdbb2fb906b38cefb113bfdd4a79.tar.bz2 linux-711c7dbf5fdafdbb2fb906b38cefb113bfdd4a79.zip |
xfs: cleanup xfs_dir2_data_entsize
Remove the XFS_DIR2_DATA_ENTSIZE and XFS_DIR3_DATA_ENTSIZE and open
code them in their only caller, which now becomes so simple that
we can turn it into an inline function.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Diffstat (limited to 'fs')
-rw-r--r-- | fs/xfs/libxfs/xfs_da_format.c | 33 | ||||
-rw-r--r-- | fs/xfs/libxfs/xfs_dir2_priv.h | 15 |
2 files changed, 14 insertions, 34 deletions
diff --git a/fs/xfs/libxfs/xfs_da_format.c b/fs/xfs/libxfs/xfs_da_format.c index 0e35e613fbf3..dd2389748672 100644 --- a/fs/xfs/libxfs/xfs_da_format.c +++ b/fs/xfs/libxfs/xfs_da_format.c @@ -19,39 +19,6 @@ * Directory data block operations */ -/* - * For special situations, the dirent size ends up fixed because we always know - * what the size of the entry is. That's true for the "." and "..", and - * therefore we know that they are a fixed size and hence their offsets are - * constant, as is the first entry. - * - * Hence, this calculation is written as a macro to be able to be calculated at - * compile time and so certain offsets can be calculated directly in the - * structure initaliser via the macro. There are two macros - one for dirents - * with ftype and without so there are no unresolvable conditionals in the - * calculations. We also use round_up() as XFS_DIR2_DATA_ALIGN is always a power - * of 2 and the compiler doesn't reject it (unlike roundup()). - */ -#define XFS_DIR2_DATA_ENTSIZE(n) \ - round_up((offsetof(struct xfs_dir2_data_entry, name[0]) + (n) + \ - sizeof(xfs_dir2_data_off_t)), XFS_DIR2_DATA_ALIGN) - -#define XFS_DIR3_DATA_ENTSIZE(n) \ - round_up((offsetof(struct xfs_dir2_data_entry, name[0]) + (n) + \ - sizeof(xfs_dir2_data_off_t) + sizeof(uint8_t)), \ - XFS_DIR2_DATA_ALIGN) - -int -xfs_dir2_data_entsize( - struct xfs_mount *mp, - int n) -{ - if (xfs_sb_version_hasftype(&mp->m_sb)) - return XFS_DIR3_DATA_ENTSIZE(n); - else - return XFS_DIR2_DATA_ENTSIZE(n); -} - static uint8_t xfs_dir2_data_get_ftype( struct xfs_dir2_data_entry *dep) diff --git a/fs/xfs/libxfs/xfs_dir2_priv.h b/fs/xfs/libxfs/xfs_dir2_priv.h index a6c3fb3a2f7b..d8f10be77b46 100644 --- a/fs/xfs/libxfs/xfs_dir2_priv.h +++ b/fs/xfs/libxfs/xfs_dir2_priv.h @@ -57,7 +57,6 @@ extern int xfs_dir2_leaf_to_block(struct xfs_da_args *args, struct xfs_buf *lbp, struct xfs_buf *dbp); /* xfs_dir2_data.c */ -int xfs_dir2_data_entsize(struct xfs_mount *mp, int n); __be16 *xfs_dir2_data_entry_tag_p(struct xfs_mount *mp, struct xfs_dir2_data_entry *dep); @@ -172,4 +171,18 @@ extern xfs_failaddr_t xfs_dir2_sf_verify(struct xfs_inode *ip); extern int xfs_readdir(struct xfs_trans *tp, struct xfs_inode *dp, struct dir_context *ctx, size_t bufsize); +static inline unsigned int +xfs_dir2_data_entsize( + struct xfs_mount *mp, + unsigned int namelen) +{ + unsigned int len; + + len = offsetof(struct xfs_dir2_data_entry, name[0]) + namelen + + sizeof(xfs_dir2_data_off_t) /* tag */; + if (xfs_sb_version_hasftype(&mp->m_sb)) + len += sizeof(uint8_t); + return round_up(len, XFS_DIR2_DATA_ALIGN); +} + #endif /* __XFS_DIR2_PRIV_H__ */ |