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Support the fallocate() file operation.

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Currently only the (FALLOC_FL_PUNCH_HOLE) flag combination is
supported, since it's the only one that matches the behavior of
zfs_space(). This makes it pretty much useless in its current
form, but it's a start.

To support other flag combinations we would need to modify
zfs_space() to make it more flexible, or emulate the desired
functionality in zpl_fallocate().

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
Issue #334
This commit is contained in:
Etienne Dechamps
2011-09-02 09:42:07 +02:00
committed by Brian Behlendorf
parent aec69371a6
commit cb2d19010d
61 changed files with 447 additions and 0 deletions
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config/kernel.m4
+1
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@@ -43,6 +43,7 @@ AC_DEFUN([ZFS_AC_CONFIG_KERNEL], [
ZFS_AC_KERNEL_EVICT_INODE
ZFS_AC_KERNEL_NR_CACHED_OBJECTS
ZFS_AC_KERNEL_FREE_CACHED_OBJECTS
ZFS_AC_KERNEL_FALLOCATE
ZFS_AC_KERNEL_INSERT_INODE_LOCKED
ZFS_AC_KERNEL_D_OBTAIN_ALIAS
ZFS_AC_KERNEL_CHECK_DISK_SIZE_CHANGE