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802e7b5feb
The approach taken was the rework zfs_holey() as little as possible and then just wrap the code as needed to ensure correct locking and error handling. Tested with xfstests 285 and 286. All tests pass except for 7-9 of 285 which try to reserve blocks first via fallocate(2) and fail because fallocate(2) is not yet supported. Note that the filp->f_lock spinlock did not exist prior to Linux 2.6.30, but we avoid the need for autotools check by virtue of the fact that SEEK_DATA/SEEK_HOLE support was not added until Linux 3.1. An autoconf check was added for lseek_execute() which is currently a private function but the expectation is that it will be exported perhaps as early as Linux 3.11. Reviewed-by: Richard Laager <rlaager@wiktel.com> Signed-off-by: Richard Yao <ryao@gentoo.org> Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov> Closes #1384 |
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| blkdev_compat.h | ||
| dcache_compat.h | ||
| Makefile.am | ||
| vfs_compat.h | ||
| xattr_compat.h | ||