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| author | Russell King <rmk+kernel@armlinux.org.uk> | 2019-12-09 14:10:16 +0300 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2020-01-21 04:12:41 +0300 |
| commit | 4287e4deb1280633ffbda608f946d6d7c2d76d4a (patch) | |
| tree | 4494eba3d3a9ce47f4d7772d6332054bdc08ef7e /fs/adfs/dir_fplus.c | |
| parent | cdc46e99e1c9f50802c4f543f10151887e4c4e0e (diff) | |
| download | linux-4287e4deb1280633ffbda608f946d6d7c2d76d4a.tar.xz | |
fs/adfs: dir: add more efficient iterate() per-format method
Rather than using setpos + getnext to iterate through the directory
entries, pass iterate() down to the dir format code to populate the
dirents.
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/adfs/dir_fplus.c')
| -rw-r--r-- | fs/adfs/dir_fplus.c | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/fs/adfs/dir_fplus.c b/fs/adfs/dir_fplus.c index ae11236515d0..edcbaa94ecb9 100644 --- a/fs/adfs/dir_fplus.c +++ b/fs/adfs/dir_fplus.c @@ -118,8 +118,29 @@ adfs_fplus_getnext(struct adfs_dir *dir, struct object_info *obj) return 0; } +static int adfs_fplus_iterate(struct adfs_dir *dir, struct dir_context *ctx) +{ + struct object_info obj; + + if ((ctx->pos - 2) >> 32) + return 0; + + if (adfs_fplus_setpos(dir, ctx->pos - 2)) + return 0; + + while (!adfs_fplus_getnext(dir, &obj)) { + if (!dir_emit(ctx, obj.name, obj.name_len, + obj.indaddr, DT_UNKNOWN)) + break; + ctx->pos++; + } + + return 0; +} + const struct adfs_dir_ops adfs_fplus_dir_ops = { .read = adfs_fplus_read, + .iterate = adfs_fplus_iterate, .setpos = adfs_fplus_setpos, .getnext = adfs_fplus_getnext, }; |