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author | Andreas Gruenbacher <agruenba@redhat.com> | 2021-03-31 23:17:38 +0200 |
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committer | Andreas Gruenbacher <agruenba@redhat.com> | 2021-04-03 21:38:11 +0200 |
commit | 9153dac13a6966b63183bac450d5cd39b07cc85c (patch) | |
tree | 1ec293a4bb6fc6656e457d855027a10d7ec953c0 /fs/gfs2/bmap.c | |
parent | 54992257fe4bb9f76f66b3863492aa8cc5567790 (diff) | |
download | linux-9153dac13a6966b63183bac450d5cd39b07cc85c.tar.bz2 |
gfs2: Turn gfs2_extent_map into gfs2_{get,alloc}_extent
Convert gfs2_extent_map to iomap and split it into gfs2_get_extent and
gfs2_alloc_extent. Instead of hardcoding the extent size, pass it in
via the extlen parameter.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Diffstat (limited to 'fs/gfs2/bmap.c')
-rw-r--r-- | fs/gfs2/bmap.c | 59 |
1 files changed, 39 insertions, 20 deletions
diff --git a/fs/gfs2/bmap.c b/fs/gfs2/bmap.c index cc12dc0d6955..ac959a99ea81 100644 --- a/fs/gfs2/bmap.c +++ b/fs/gfs2/bmap.c @@ -1320,28 +1320,47 @@ out: return ret; } -/* - * Deprecated: do not use in new code - */ -int gfs2_extent_map(struct inode *inode, u64 lblock, int *new, u64 *dblock, unsigned *extlen) +int gfs2_get_extent(struct inode *inode, u64 lblock, u64 *dblock, + unsigned int *extlen) { - struct buffer_head bh = { .b_state = 0, .b_blocknr = 0 }; + unsigned int blkbits = inode->i_blkbits; + struct iomap iomap = { }; + unsigned int len; int ret; - int create = *new; - - BUG_ON(!extlen); - BUG_ON(!dblock); - BUG_ON(!new); - - bh.b_size = BIT(inode->i_blkbits + (create ? 0 : 5)); - ret = gfs2_block_map(inode, lblock, &bh, create); - *extlen = bh.b_size >> inode->i_blkbits; - *dblock = bh.b_blocknr; - if (buffer_new(&bh)) - *new = 1; - else - *new = 0; - return ret; + + ret = gfs2_iomap_get(inode, lblock << blkbits, *extlen << blkbits, + &iomap); + if (ret) + return ret; + if (iomap.type != IOMAP_MAPPED) + return -EIO; + *dblock = iomap.addr >> blkbits; + len = iomap.length >> blkbits; + if (len < *extlen) + *extlen = len; + return 0; +} + +int gfs2_alloc_extent(struct inode *inode, u64 lblock, u64 *dblock, + unsigned int *extlen, bool *new) +{ + unsigned int blkbits = inode->i_blkbits; + struct iomap iomap = { }; + unsigned int len; + int ret; + + ret = gfs2_iomap_alloc(inode, lblock << blkbits, *extlen << blkbits, + &iomap); + if (ret) + return ret; + if (iomap.type != IOMAP_MAPPED) + return -EIO; + *dblock = iomap.addr >> blkbits; + len = iomap.length >> blkbits; + if (len < *extlen) + *extlen = len; + *new = iomap.flags & IOMAP_F_NEW; + return 0; } /* |