write support for preallocated blocks

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This patch adds write support to the uninitialized extents that get
created when a preallocation is done using fallocate(). It takes care of
splitting the extents into multiple (upto three) extents and merging the
new split extents with neighbouring ones, if possible.

Signed-off-by: Amit Arora <aarora@in.ibm.com>

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Amit Arora 2007-07-17 21:42:38 -04:00 • committed by Theodore Ts'o

parent a2df2a6340

commit 56055d3ae4

2 changed files with 225 additions and 32 deletions

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254

fs/ext4/extents.c

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3

include/linux/ext4_fs_extents.h

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