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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
Download Patch File Download Diff File Expand all files Collapse all files
include/Makefile.in
+1
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@@ -65,6 +65,7 @@ am__aclocal_m4_deps = \
$(top_srcdir)/config/kernel-check-disk-size-change.m4 \
$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
$(top_srcdir)/config/kernel-evict-inode.m4 \
$(top_srcdir)/config/kernel-fallocate.m4 \
$(top_srcdir)/config/kernel-fmode-t.m4 \
$(top_srcdir)/config/kernel-fsync.m4 \
$(top_srcdir)/config/kernel-get-disk-ro.m4 \
include/linux/Makefile.in
+1
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@@ -65,6 +65,7 @@ am__aclocal_m4_deps = \
$(top_srcdir)/config/kernel-check-disk-size-change.m4 \
$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
$(top_srcdir)/config/kernel-evict-inode.m4 \
$(top_srcdir)/config/kernel-fallocate.m4 \
$(top_srcdir)/config/kernel-fmode-t.m4 \
$(top_srcdir)/config/kernel-fsync.m4 \
$(top_srcdir)/config/kernel-get-disk-ro.m4 \
include/sys/Makefile.in
+1
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@@ -65,6 +65,7 @@ am__aclocal_m4_deps = \
$(top_srcdir)/config/kernel-check-disk-size-change.m4 \
$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
$(top_srcdir)/config/kernel-evict-inode.m4 \
$(top_srcdir)/config/kernel-fallocate.m4 \
$(top_srcdir)/config/kernel-fmode-t.m4 \
$(top_srcdir)/config/kernel-fsync.m4 \
$(top_srcdir)/config/kernel-get-disk-ro.m4 \
include/sys/fm/Makefile.in
+1
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@@ -65,6 +65,7 @@ am__aclocal_m4_deps = \
$(top_srcdir)/config/kernel-check-disk-size-change.m4 \
$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
$(top_srcdir)/config/kernel-evict-inode.m4 \
$(top_srcdir)/config/kernel-fallocate.m4 \
$(top_srcdir)/config/kernel-fmode-t.m4 \
$(top_srcdir)/config/kernel-fsync.m4 \
$(top_srcdir)/config/kernel-get-disk-ro.m4 \
include/sys/fm/fs/Makefile.in
+1
View File
@@ -65,6 +65,7 @@ am__aclocal_m4_deps = \
$(top_srcdir)/config/kernel-check-disk-size-change.m4 \
$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
$(top_srcdir)/config/kernel-evict-inode.m4 \
$(top_srcdir)/config/kernel-fallocate.m4 \
$(top_srcdir)/config/kernel-fmode-t.m4 \
$(top_srcdir)/config/kernel-fsync.m4 \
$(top_srcdir)/config/kernel-get-disk-ro.m4 \
include/sys/fs/Makefile.in
+1
View File
@@ -65,6 +65,7 @@ am__aclocal_m4_deps = \
$(top_srcdir)/config/kernel-check-disk-size-change.m4 \
$(top_srcdir)/config/kernel-d-obtain-alias.m4 \
$(top_srcdir)/config/kernel-evict-inode.m4 \
$(top_srcdir)/config/kernel-fallocate.m4 \
$(top_srcdir)/config/kernel-fmode-t.m4 \
$(top_srcdir)/config/kernel-fsync.m4 \
$(top_srcdir)/config/kernel-get-disk-ro.m4 \
include/sys/zpl.h
+3
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@@ -30,6 +30,7 @@
#include <linux/xattr_compat.h>
#include <linux/exportfs.h>
#include <linux/writeback.h>
#include <linux/falloc.h>
/* zpl_inode.c */
extern const struct inode_operations zpl_inode_operations;
@@ -42,6 +43,8 @@ extern ssize_t zpl_read_common(struct inode *ip, const char *buf,
size_t len, loff_t pos, uio_seg_t segment, int flags, cred_t *cr);
extern ssize_t zpl_write_common(struct inode *ip, const char *buf,
size_t len, loff_t pos, uio_seg_t segment, int flags, cred_t *cr);
extern long zpl_fallocate_common(struct inode *ip, int mode,
loff_t offset, loff_t len);
extern const struct address_space_operations zpl_address_space_operations;
extern const struct file_operations zpl_file_operations;