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| author | Arnd Bergmann <arnd@arndb.de> | 2012-02-28 12:42:14 +0000 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2012-02-28 12:42:21 +0000 |
| commit | fb0b82b32ce17564bc64cede50bf4a3204eecc60 (patch) | |
| tree | 00b5e466074c6fb373d64c493b3341186024acc7 /drivers/block/loop.c | |
| parent | a173fc693b25216c5c834978f4fafd731fd4ff94 (diff) | |
| parent | 43de6a7dda6e9a7345e218e688f2092f991126f0 (diff) | |
| download | cachepc-linux-fb0b82b32ce17564bc64cede50bf4a3204eecc60.tar.gz cachepc-linux-fb0b82b32ce17564bc64cede50bf4a3204eecc60.zip | |
Merge branch 'board-specific' of git://github.com/hzhuang1/linux into next/boards
* 'board-specific' of git://github.com/hzhuang1/linux: (5 commits)
ARM: pxa: add dummy clock for pxa25x and pxa27x
ARM: mmp: append irq name of gpio device
pxa/hx4700: Fix PXA_GPIO_IRQ_BASE/IRQ_NUM values
pxa/hx4700: Add ASIC3 LED support
pxa/hx4700: Correct StrataFlash block size discovery
(update to v3.3-rc5)
Diffstat (limited to 'drivers/block/loop.c')
| -rw-r--r-- | drivers/block/loop.c | 24 |
1 files changed, 13 insertions, 11 deletions
diff --git a/drivers/block/loop.c b/drivers/block/loop.c index f00257782fcc..cd504353b278 100644 --- a/drivers/block/loop.c +++ b/drivers/block/loop.c @@ -356,14 +356,14 @@ lo_direct_splice_actor(struct pipe_inode_info *pipe, struct splice_desc *sd) return __splice_from_pipe(pipe, sd, lo_splice_actor); } -static int +static ssize_t do_lo_receive(struct loop_device *lo, struct bio_vec *bvec, int bsize, loff_t pos) { struct lo_read_data cookie; struct splice_desc sd; struct file *file; - long retval; + ssize_t retval; cookie.lo = lo; cookie.page = bvec->bv_page; @@ -379,26 +379,28 @@ do_lo_receive(struct loop_device *lo, file = lo->lo_backing_file; retval = splice_direct_to_actor(file, &sd, lo_direct_splice_actor); - if (retval < 0) - return retval; - if (retval != bvec->bv_len) - return -EIO; - return 0; + return retval; } static int lo_receive(struct loop_device *lo, struct bio *bio, int bsize, loff_t pos) { struct bio_vec *bvec; - int i, ret = 0; + ssize_t s; + int i; bio_for_each_segment(bvec, bio, i) { - ret = do_lo_receive(lo, bvec, bsize, pos); - if (ret < 0) + s = do_lo_receive(lo, bvec, bsize, pos); + if (s < 0) + return s; + + if (s != bvec->bv_len) { + zero_fill_bio(bio); break; + } pos += bvec->bv_len; } - return ret; + return 0; } static int do_bio_filebacked(struct loop_device *lo, struct bio *bio) |